Math Homework Answers - Recent questions tagged statistics problems
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A store that specializes in maternity clothes tracks the sales of black shirts for five days. The raw data for the sales of skirts, indicated by the skirts size sold, is shown below.Algebra 1 Answershttps://www.mathhomeworkanswers.org/252557/10-12-10-8-16-16-8-12-6-16-12-12-12-10-22-8-20-16-12-14-6-12-18-16-10-8-12-10Mon, 11 Jun 2018 14:34:13 +0000mean of 78.4 and 77 percent of the scores are above 90 .The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth, if necessary.
https://www.mathhomeworkanswers.org/252276/distribution-approximately-standard-deviation-necessary
<p><span style="background-color:transparent; color:rgb(94, 101, 107); font-family:open sans,sans-serif; font-size:14px">Scores on a test have a mean of </span><span style="background-color:transparent; color:rgb(77, 77, 77); font-family:& font-size:14px"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-size:17.2px"><span style="color:rgb(77, 77, 77)"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-family:stixmathjax_main">78.4</span></span></span></span></span></span><span style="background-color:transparent; color:rgb(94, 101, 107); font-family:open sans,sans-serif; font-size:14px"> and </span><span style="background-color:transparent; color:rgb(77, 77, 77); font-family:& font-size:14px"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-size:17.2px"><span style="color:rgb(77, 77, 77)"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-family:stixmathjax_main">77</span></span></span></span></span></span><span style="background-color:transparent; color:rgb(94, 101, 107); font-family:open sans,sans-serif; font-size:14px"> percent of the scores are above </span><span style="background-color:transparent; color:rgb(77, 77, 77); font-family:& font-size:14px"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-size:17.2px"><span style="color:rgb(77, 77, 77)"><span style="color:rgb(77, 77, 77); font-family:&amp"><span style="color:rgb(77, 77, 77); font-family:stixmathjax_main">90</span></span></span></span></span></span><span style="background-color:transparent; color:rgb(94, 101, 107); font-family:open sans,sans-serif; font-size:14px">. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth, if necessary.</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/252276/distribution-approximately-standard-deviation-necessaryWed, 23 May 2018 21:57:28 +0000Sample of 500 obtained, 35 defective, are they normally distributed And what would be the critical value?
https://www.mathhomeworkanswers.org/251753/sample-obtained-defective-normally-distributed-critical
A sample of 500 is obtained, of which 35 were defective. Can we assume that the sample proportions are normally distributed? And what would be the critical value?Statistics Answershttps://www.mathhomeworkanswers.org/251753/sample-obtained-defective-normally-distributed-criticalMon, 30 Apr 2018 13:53:18 +0000Statistics
https://www.mathhomeworkanswers.org/251608/statistics
When an opinion poll calls residential telephone numbers at random. Only 20% of the calls reach a live person. You watch a random digit dialing machine make 15 calls. What is the probability that exactly 3 calls reach a person?Statistics Answershttps://www.mathhomeworkanswers.org/251608/statisticsMon, 23 Apr 2018 00:57:18 +0000For a sample of n = 100, what is the standard deviation of the binomial distribution with p = .20 and q = .80?
https://www.mathhomeworkanswers.org/251490/sample-what-standard-deviation-binomial-distribution-with
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">For a sample of </span><em>n</em><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> = 100, what is the standard deviation of the binomial distribution with </span><em>p</em> = .20<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> and </span><em>q</em> = .80?</p>
<div></div>Statistics Answershttps://www.mathhomeworkanswers.org/251490/sample-what-standard-deviation-binomial-distribution-withMon, 16 Apr 2018 21:14:29 +0000In a city softball league, the number of wins had a mean of 72.32, with a standard deviation of 9.4, the equation that predict the number of wins (y) using the number of runs allowed (x) is?
https://www.mathhomeworkanswers.org/251349/softball-standard-deviation-equation-predict-number-allowed
Y= 49.65 - .0398x Round to the nearest 10th when applicable (1 decimal) What is the predicted number of wins for a team that allowed 750 runs? If the team that allowed 750 runs actually had 23 wins, what would the residual be?Statistics Answershttps://www.mathhomeworkanswers.org/251349/softball-standard-deviation-equation-predict-number-allowedWed, 11 Apr 2018 04:45:46 +0000What is. .145 square]
https://www.mathhomeworkanswers.org/251207/what-is-145-square
5'7 as meters squaredWord Problem Answershttps://www.mathhomeworkanswers.org/251207/what-is-145-squareThu, 05 Apr 2018 04:02:01 +0000rewrite the addition A. Rewrite the basic adition rule P(Y or Z) = P(Y) = P(Z) - P(Y and Z) using the information tha Y and Z are independent events.
https://www.mathhomeworkanswers.org/251127/rewrite-addition-rewrite-adition-information-independent
A. Rewrite the basic adition rule P(Y or Z) = P(Y) = P(Z) - P(Y and Z) using the information tha Y and Z are independent events.<br />
<br />
B. Use the rewritten rule to find P(Z) if P(Y or Z) = 0.69 and P(Y)= 0.44Statistics Answershttps://www.mathhomeworkanswers.org/251127/rewrite-addition-rewrite-adition-information-independentThu, 29 Mar 2018 17:16:58 +0000Given the following information, determine the equation for the unit formulation. (Round intermediate calculations to 4 decimal places)
https://www.mathhomeworkanswers.org/250280/information-determine-formulation-intermediate-calculations
~~<br />
Unit Number (X)<br />
<br />
Unit Cost (Y) $<br />
<br />
1 700.00<br />
2 600.00<br />
3 548.27<br />
4 514.29<br />
<br />
<br />
<br />
<br />
Y = (700)(X) 0.9633<br />
<br />
Y = (700)(X) -0.2224<br />
<br />
Y = (700)(X) 0.8571<br />
<br />
Y = (700)(X) -0.0539Calculus Answershttps://www.mathhomeworkanswers.org/250280/information-determine-formulation-intermediate-calculationsMon, 22 Jan 2018 21:29:32 +0000A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 142.7-cm and a standard deviation of 2.2-cm.
https://www.mathhomeworkanswers.org/250013/company-produces-normally-distributed-standard-deviation
<p><span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 142.7-cm and a standard deviation of 2.2-cm.</span>
<br>
<br>
<span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">Find the probability that the length of a randomly selected steel rod is between 137.6-cm and 143.6-cm. </span>
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<em>P</em><span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">(137.6-cm < </span><em>X</em><span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px"> < 143.6-cm) = </span>
<br>
<br>
<span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">Enter your answer as a number accurate to 4 decimal places. Answers obtained using exact </span><em>z</em><span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">-scores or </span><em>z</em><span style="background-color:rgb(247, 252, 255); color:rgb(0, 0, 0); font-family:open sans,trebuchet ms,arial,helvetica,sans-serif; font-size:15px">-scores rounded to 3 decimal places are accepted.</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/250013/company-produces-normally-distributed-standard-deviationMon, 08 Jan 2018 20:59:21 +0000A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.9 years, and standard deviation of 2.2 years. If you randomly purchase one item,
https://www.mathhomeworkanswers.org/250012/manufacturer-normally-distributed-standard-deviation-purchase
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 11.9 years, and standard deviation of 2.2 years.<br />
<br />
If you randomly purchase one item, what is the probability it will last longer than 18 years?Statistics Answershttps://www.mathhomeworkanswers.org/250012/manufacturer-normally-distributed-standard-deviation-purchaseMon, 08 Jan 2018 20:57:31 +0000A population of values has a normal distribution with μ = 166 μ=166 and σ = 52.2 σ=52.2. You intend to draw a random sample of size n = 97 n=97.
https://www.mathhomeworkanswers.org/247761/population-values-normal-distribution-intend-random-sample
<p><span style="background-color:rgb(221, 221, 255); font-family:times new roman,times,serif">What is the mean of the distribution of sample means? </span>
<br>
<span style="background-color:rgb(221, 221, 255); font-family:times new roman,times,serif; font-size:16.16px"><span style="font-family:mjxc-tex-math-i,mjxc-tex-math-ix,mjxc-tex-math-iw">μ</span><span style="font-size:11.4251px"><span style="font-family:mjxc-tex-main-r,mjxc-tex-main-rw">¯</span><span style="font-family:mjxc-tex-math-i,mjxc-tex-math-ix,mjxc-tex-math-iw">x</span></span><span style="font-family:mjxc-tex-main-r,mjxc-tex-main-rw">=</span></span></p>
<p>
<br>
What is the standard deviation of the distribution of sample means?
<br>
<span style="font-size:16.16px"><span style="background-color:rgb(221, 221, 255); font-family:times new roman,times,serif; font-size:16.16px"><span style="font-family:mjxc-tex-math-i,mjxc-tex-math-ix,mjxc-tex-math-iw">σ</span><span style="font-size:11.4251px"><span style="font-family:mjxc-tex-main-r,mjxc-tex-main-rw">¯</span><span style="font-family:mjxc-tex-math-i,mjxc-tex-math-ix,mjxc-tex-math-iw">x</span></span></span></span></p>
<p> </p>Statistics Answershttps://www.mathhomeworkanswers.org/247761/population-values-normal-distribution-intend-random-sampleTue, 07 Nov 2017 01:58:46 +0000a gambler bets on number 8, there is a 1/38 chance of winning, the gambler bets on number 8 seventy times. what are the values for n,p,q? Find the mean, standard deviati
https://www.mathhomeworkanswers.org/247740/gambler-winning-gambler-number-seventy-values-standard-deviati
a gambler bets on number 8, there is a 1/38 chance of winning, the gambler bets on number 8 seventy times. what are the values for n,p,q? Find the mean, standard deviation. the rulette is americanStatistics Answershttps://www.mathhomeworkanswers.org/247740/gambler-winning-gambler-number-seventy-values-standard-deviatiMon, 06 Nov 2017 19:00:13 +0000A manufacturing machine has a 4% defect rate. If 10 items are chosen at random, what is the probability that at least one will have a defect?
https://www.mathhomeworkanswers.org/247441/manufacturing-machine-defect-chosen-random-probability-defect
I dont know how to sovle this and would likea step by step process.Statistics Answershttps://www.mathhomeworkanswers.org/247441/manufacturing-machine-defect-chosen-random-probability-defectMon, 30 Oct 2017 23:29:30 +0000What is the shortest time spent waiting for a heart that would still place a patient in the top 20% of waiting times?
https://www.mathhomeworkanswers.org/247389/shortest-waiting-heart-would-still-place-patient-waiting-times
<table class="rvTable" style="background-color:transparent; border-spacing:0px; border:none; box-sizing:border-box; color:rgb(77, 77, 77); font-family:arial,helvetica,sans-serif; image-rendering:-webkit-optimize-contrast; max-width:100%; width:963px">
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<tr>
<td style="background-color:transparent; vertical-align:top"><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">The time spent<span style="font-family:arial,helvetica,sans-serif"></span> (in days) waiting for a heart transplant in two states for patients with type </span>
<p><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">Upper A Superscript plusA<span style="font-size:11.05px">+</span></span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial"> </span></p>
<span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">blood can be approximated by a normal<span style="font-family:arial,helvetica,sans-serif"></span> distribution, as shown in the graph to the right. Complete parts<span style="font-family:arial,helvetica,sans-serif"></span> (a) and<span style="font-family:arial,helvetica,sans-serif"></span> (b) below.</span></td>
</tr>
</tbody>
</table>Statistics Answershttps://www.mathhomeworkanswers.org/247389/shortest-waiting-heart-would-still-place-patient-waiting-timesMon, 30 Oct 2017 01:12:15 +0000What is the solution to this problem?
https://www.mathhomeworkanswers.org/246566/what-is-the-solution-to-this-problem
Kay invested in real estate with the intention of selling the property 1 yr from today. She has modeled on that investment based on 3 economic scenarios. She believes that if the economy stays healthy, then her will generate a 30% return. However, if the economy softens, as predicted, the return will be 10%, while the return will be -25% if the economy slips into a recession. If the probabilities of the healthy, soft, and recessionary states are 0.5, 0.3, and 0.2, respectively, then what are the expected return and the standard deviation of the return on her investment?Word Problem Answershttps://www.mathhomeworkanswers.org/246566/what-is-the-solution-to-this-problemThu, 12 Oct 2017 01:10:13 +0000If p(a)=.44, p(b)=.27 and p(a or b)=.6, are a and b mutually exclusive events ? Why or why not?
https://www.mathhomeworkanswers.org/246290/if-44-27-and-or-are-and-mutually-exclusive-events-why-or-why-not
If p(a)=.44, p(b)=.27 and p(a or b)=.6, are a and b mutually exclusive events? Why or why not?Statistics Answershttps://www.mathhomeworkanswers.org/246290/if-44-27-and-or-are-and-mutually-exclusive-events-why-or-why-notMon, 02 Oct 2017 22:52:29 +0000Consider a variation on the “random ice cream price” (pay what you roll) process: Two fair, six sided dice are rolled, but now the price is the smaller number followed by the larger number.
https://www.mathhomeworkanswers.org/245866/consider-variation-random-process-smaller-number-followed
Consider a variation on the “random ice cream price” (pay what you roll) process: Two fair, six sided dice are rolled, but now the price is the smaller number followed by the larger number.<br />
<br />
<br />
<br />
a. Determine the probability that you can afford the ice cream cone if you only have 25 cents.<br />
<br />
Explain/justify your answer (here and throughout).<br />
<br />
b. Determine the probability that the price is an odd number.<br />
<br />
8. Consider another variation on the “random ice cream price” process: Two dice are rolled, but now these are 10-sided dice with the digits 0 – 9 on the sides. The price is back to being the larger number followed by the smaller number.<br />
<br />
a. Determine the probability that the price is no more than 10 cents.<br />
<br />
b. Determine the probability that the price is more than 50 cents.<br />
<br />
<br />
<br />
<br />
<br />
9. Consider yet another variation on the “random ice cream price” process: Three fair, six sided dice are rolled, and the price is the largest number followed by the smallest number. If you are the customer and therefore prefer a smaller price, would you prefer to use two dice or three dice, or would you not have a preference? Explain your answer, but do not bother to perform any calculations.<br />
<br />
10. Suppose that you encounter two traffic lights on your commute to school. Based on past experience, you judge that the probability is .45 that the first light will be red when you get to it, .35 that the second light will be red, and .25 that both lights will be red.<br />
<br />
a. Produce a probability table to organize the given probabilities.<br />
<br />
b. Determine the probability that at least one light will be red. Also name the relevant probability rule that you could use.<br />
<br />
c. Determine the long-run percentage of days for which neither light will be red.<br />
<br />
11. Consider that the 2012 U.S. Pet Ownership and Demographics Sourcebook reports that 36.5% of American households have a pet dog and 30.4% have a pet cat.<br />
<br />
a. Does it follow from this information that 66.9% (the sum of 36.5% and 30.4%) of American households have a pet dog or a pet cat? Explain/justify your answer.<br />
<br />
b. Based on the information given, what is the smallest possible value for the percentage of American households that have a pet dog or a pet cat?Statistics Answershttps://www.mathhomeworkanswers.org/245866/consider-variation-random-process-smaller-number-followedThu, 21 Sep 2017 18:35:39 +0000Statistics
https://www.mathhomeworkanswers.org/245867/statistics
7. Consider a variation on the “random ice cream price” (pay what you roll) process: Two fair, six sided dice are rolled, but now the price is the smaller number followed by the larger number.<br />
<br />
<br />
<br />
a. Determine the probability that you can afford the ice cream cone if you only have 25 cents.<br />
<br />
Explain/justify your answer (here and throughout).<br />
<br />
b. Determine the probability that the price is an odd number.<br />
<br />
8. Consider another variation on the “random ice cream price” process: Two dice are rolled, but now these are 10-sided dice with the digits 0 – 9 on the sides. The price is back to being the larger number followed by the smaller number.<br />
<br />
a. Determine the probability that the price is no more than 10 cents.<br />
<br />
b. Determine the probability that the price is more than 50 cents.<br />
<br />
<br />
<br />
<br />
<br />
9. Consider yet another variation on the “random ice cream price” process: Three fair, six sided dice are rolled, and the price is the largest number followed by the smallest number. If you are the customer and therefore prefer a smaller price, would you prefer to use two dice or three dice, or would you not have a preference? Explain your answer, but do not bother to perform any calculations.<br />
<br />
<br />
<br />
10. Suppose that you encounter two traffic lights on your commute to school. Based on past experience, you judge that the probability is .45 that the first light will be red when you get to it, .35 that the second light will be red, and .25 that both lights will be red.<br />
<br />
a. Produce a probability table to organize the given probabilities.<br />
<br />
b. Determine the probability that at least one light will be red. Also name the relevant probability rule that you could use.<br />
<br />
c. Determine the long-run percentage of days for which neither light will be red.<br />
<br />
<br />
<br />
11. Consider that the 2012 U.S. Pet Ownership and Demographics Sourcebook reports that 36.5% of American households have a pet dog and 30.4% have a pet cat.<br />
<br />
a. Does it follow from this information that 66.9% (the sum of 36.5% and 30.4%) of American households have a pet dog or a pet cat? Explain/justify your answer.<br />
<br />
b. Based on the information given, what is the smallest possible value for the percentage of American households that have a pet dog or a pet cat?Statistics Answershttps://www.mathhomeworkanswers.org/245867/statisticsThu, 21 Sep 2017 18:35:29 +0000Consider a variation on the “random ice cream price” (pay what you roll) process: Two fair, six sided dice are rolled, but now the price is the smaller number followed by the larger number.
https://www.mathhomeworkanswers.org/245848/consider-variation-random-process-smaller-number-followed
Consider a variation on the “random ice cream price” (pay what you roll) process: Two fair, six sided dice are rolled, but now the price is the smaller number followed by the larger number.Statistics Answershttps://www.mathhomeworkanswers.org/245848/consider-variation-random-process-smaller-number-followedTue, 19 Sep 2017 18:10:18 +0000what is the probability that the sum of two dice is 7 or 9 if the second of the two dice is a 2 or 3
https://www.mathhomeworkanswers.org/245803/what-the-probability-that-the-sum-dice-the-second-the-two-dice
Just need help on this I know there are 36 possible ways to roll two dice and the probability of each part but not how to combine itStatistics Answershttps://www.mathhomeworkanswers.org/245803/what-the-probability-that-the-sum-dice-the-second-the-two-diceMon, 18 Sep 2017 21:54:37 +0000hypothesis testing
https://www.mathhomeworkanswers.org/245572/hypothesis-testing
<p><img alt="" src="https://www.mathhomeworkanswers.org/?qa=blob&qa_blobid=14046809060672272069"></p>
<p>please do help in question 9 part b then i will do question 10 myself </p>
<p>just need help in part (b) , how to use internet to collect data </p>
<p> </p>Word Problem Answershttps://www.mathhomeworkanswers.org/245572/hypothesis-testingMon, 11 Sep 2017 18:53:46 +0000basket have 3 bananas and 5 apples. Find the probability through binomial distribution for getting 2 apples.
https://www.mathhomeworkanswers.org/242557/bananas-probability-through-binomial-distribution-getting
basket have 3 bananas and 5 apples. Find the probability through binomial distribution for getting 2 apples.Statistics Answershttps://www.mathhomeworkanswers.org/242557/bananas-probability-through-binomial-distribution-gettingMon, 05 Jun 2017 07:07:32 +0000statistics
https://www.mathhomeworkanswers.org/242050/statistics
(a) You are planning to make sales calls to 8 firms tomorrow. As a rough approximation, you figure out that each call has a 20% chance of resulting in a sale and that firms make their buying decisions without consulting each other. 1-find the probability of having a really terrible day with no sales at all. 2-find the probability of having no more than 2 sales. (b) The amount of time devoted to studying each week by students who receive a grade A in the course is normally distributed random variable with mean of 7.5 hours and standard deviation of 2.1 hours. 1-what proportion of these students study more than 10 hours 2-find the probability that such a student spends between 7 and 9 hours studying 3-what proportion of these students spend less than 3 hours studying 4-what is the amount of time below which 5% of all students spend studying (c) On a typical day your clothing store takes care of 2.7 special customers on average. These customers are taken directly to a special room in the back of the store, are assigned a fulltime serving assistant, and are given tea and scones, have clothes bought to them. 1-find the probability that no customers arrive on any given day 2-find the probability that at least 4 customers arrive on any given dayStatistics Answershttps://www.mathhomeworkanswers.org/242050/statisticsFri, 26 May 2017 01:33:26 +0000standard deviation of 5.3%, a sample of 15 and the sample standard deviation is 5.5% and mean return is 11.2%. Construct a 98% confidence interval for the mean
https://www.mathhomeworkanswers.org/240794/standard-deviation-standard-deviation-construct-confidence
Assume standard deviation of 5.3%, a sample of 15 such and the sample standard deviation is 5.5% and the mean return is 11.2%. Construct a 98% confidence interval for the mean annual return of the assetStatistics Answershttps://www.mathhomeworkanswers.org/240794/standard-deviation-standard-deviation-construct-confidenceMon, 17 Apr 2017 16:13:52 +0000half o the question asks for the values of x and y if x+y=8
https://www.mathhomeworkanswers.org/238432/half-o-the-question-asks-for-the-values-of-x-and-y-if-x-y-8
Systems of equationsAlgebra 2 Answershttps://www.mathhomeworkanswers.org/238432/half-o-the-question-asks-for-the-values-of-x-and-y-if-x-y-8Sun, 19 Feb 2017 23:32:44 +0000Two dice are being thrown at once and getting three is considered a success. Obtain the probability distribution of the number of 3's.
https://www.mathhomeworkanswers.org/233724/getting-considered-success-obtain-probability-distribution
Please help me. Thankyou and God bless!Statistics Answershttps://www.mathhomeworkanswers.org/233724/getting-considered-success-obtain-probability-distributionTue, 13 Dec 2016 10:33:32 +0000Two-tailed test with test statistic z= -1.70 a= 0.07
https://www.mathhomeworkanswers.org/233586/two-tailed-test-with-test-statistic-z-1-70-a-0-07
<p><span style="color:rgb(0, 0, 0); font-family:arial">Find the<span style="font-family:arial,helvetica,sans-serif"></span> P-value for the indicated hypothesis test with the given standardized test<span style="font-family:arial,helvetica,sans-serif"></span> statistic, z. Decide whether to reject </span><span style="background-color:transparent; color:rgb(0, 0, 0); font-family:arial">H</span><span style="background-color:transparent; color:rgb(0, 0, 0); font-family:arial; font-size:11.05px">0 </span><span style="color:rgb(0, 0, 0); font-family:arial">for the given level of significance </span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial"><span style="font-family:stixgeneral; font-size:1.1em">α</span></span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">.</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/233586/two-tailed-test-with-test-statistic-z-1-70-a-0-07Sat, 10 Dec 2016 15:43:15 +0000Probability
https://www.mathhomeworkanswers.org/230680/probability
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">A university posts the grade distributions for its courses online. Students in a class in the fall semester received these grades: </span>19<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% A, </span>7<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% A</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">−</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">, </span>6<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% B+, </span>16<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% B, </span>12<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% B</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">−</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">, </span>5<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% C+, </span>15<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% C, </span>5<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% C</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">−</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">, </span>3<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% D+, </span>5<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% D, </span>4<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% D</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">−</span><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">, and </span>3<span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">% F. Choose a student at random. To "choose at random" means to give every student the same chance to be chosen. The student's grade on a four-point scale (with </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">A = 4,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">A− = 3.7,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">B+ = 3.3,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">B = 3.0,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">B− = 2.7,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">C+ = 2.3,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">C = 2.0,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">C− = 1.7,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">D+ = 1.3,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">D = 1.0,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">D− = 0.7,</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> and </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">F = 0.0)</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> is a discrete random variable </span><em>X</em><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> with this probability distribution.</span></p>
<table class="vert" style="border-bottom:2px solid rgb(141, 216, 248); border-collapse:collapse; border-spacing:1px; border-top:2px solid rgb(141, 216, 248); font-family:verdana,geneva,sans-serif; font-stretch:normal; line-height:normal; z-index:0">
<tbody>
<tr>
<td style="white-space:nowrap">Value of <em>X</em></td>
<td style="white-space:nowrap">0.0</td>
<td style="white-space:nowrap">0.7</td>
<td style="white-space:nowrap">1.0</td>
<td style="white-space:nowrap">1.3</td>
<td style="white-space:nowrap">1.7</td>
<td style="white-space:nowrap">2.0</td>
<td style="white-space:nowrap">2.3</td>
<td style="white-space:nowrap">2.7</td>
<td style="white-space:nowrap">3.0</td>
<td style="white-space:nowrap">3.3</td>
<td style="white-space:nowrap">3.7</td>
<td style="white-space:nowrap">4.0</td>
</tr>
<tr>
<td style="white-space:nowrap">Probability</td>
<td style="white-space:nowrap">0.03</td>
<td style="white-space:nowrap">0.04</td>
<td style="white-space:nowrap">0.05</td>
<td style="white-space:nowrap">0.03</td>
<td style="white-space:nowrap">0.05</td>
<td style="white-space:nowrap">0.15</td>
<td style="white-space:nowrap">0.05</td>
<td style="white-space:nowrap">0.12</td>
<td style="white-space:nowrap">0.16</td>
<td style="white-space:nowrap">0.06</td>
<td style="white-space:nowrap">0.07</td>
<td style="white-space:nowrap">0.19</td>
</tr>
</tbody>
</table>
<p>(a) Say in words what the meaning of <em>P</em>(<em>X</em> ≥ 3.0) is.</p>
<p>proportion of students that got lower than a Dproportion of students that got a B or higher proportion of students that got a D or lowerproportion of students that got less than a Bproportion of students that got A's</p>
<p>
<br>
What is this probability? (Enter your answer to two decimal places.)
<br>
<br>
<br>
(b) Write the event "the student got a grade poorer than B−" in terms of values of the random variable <em>X</em>.</p>
<p><em>P</em>(<em>X</em> ≤ 2.7)<em>P</em>(<em>X</em> ≥ 2.7) <em>P</em>(X < 2.7)<em>P</em>(<em>X</em> < 2.0)</p>
<p>
<br>
What is the probability of this event? (Enter your answer to two decimal places.) </p>
<p> </p>Statistics Answershttps://www.mathhomeworkanswers.org/230680/probabilityThu, 03 Nov 2016 23:55:29 +0000Statistics Probability help
https://www.mathhomeworkanswers.org/230679/statistics-probability-help
<p><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif">Choose a parent with children under age 18 in the United States at random and ask, "How many nights a week out of seven does your family eat dinner together at home?" Call the response </span><em>X</em><span style="color:rgb(0, 0, 0); font-family:verdana,helvetica,sans-serif"> for short. Based on a large sample survey, here is a probability model for the answer you will get.</span></p>
<table class="vert" style="border-bottom:2px solid rgb(141, 216, 248); border-collapse:collapse; border-spacing:1px; border-top:2px solid rgb(141, 216, 248); font-family:verdana,geneva,sans-serif; font-stretch:normal; line-height:normal; z-index:0">
<tbody>
<tr>
<td style="text-align:left; white-space:nowrap">Nights</td>
<td style="white-space:nowrap">0</td>
<td style="white-space:nowrap">1</td>
<td style="white-space:nowrap">2</td>
<td style="white-space:nowrap">3</td>
<td style="white-space:nowrap">4</td>
<td style="white-space:nowrap">5</td>
<td style="white-space:nowrap">6</td>
<td style="white-space:nowrap">7</td>
</tr>
<tr>
<td style="white-space:nowrap">Probability</td>
<td style="white-space:nowrap">0.08</td>
<td style="white-space:nowrap">0.00</td>
<td style="white-space:nowrap">0.07</td>
<td style="white-space:nowrap">0.08</td>
<td style="white-space:nowrap">0.10</td>
<td style="white-space:nowrap">0.18</td>
<td style="white-space:nowrap">0.06</td>
<td style="white-space:nowrap">0.43</td>
</tr>
</tbody>
</table>
<p>(a) Is this a valid finite probability model?</p>
<p>YesNo </p>
<p>
<br>
(b) Describe the event <em>X</em> < 4 in words.</p>
<p>The event that somebody eats dinner at home with his or her family 3 or more days per week.The event that somebody eats dinner at home with his or her family 4 or more days per week. The event that somebody eats dinner at home with his or her family 4 days per week.The event that somebody eats dinner at home with his or her family 4 or fewer days per week.The event that somebody eats dinner at home with his or her family 3 or fewer days per week.</p>
<p>
<br>
What is </p>
<p><em>P</em>(<em>X</em> < 4)?</p>
<p> (Enter your answer to two decimal place.)</p>
<p><em>P</em>(<em>X</em> < 4) = </p>
<p>
<br>
<br>
(c) Express the event "eat dinner together at home at least once a week" in terms of <em>X</em>.</p>
<p>{<em>X</em> ≥ 2}{<em>X</em> ≥ 1} {<em>X</em> ≤ 2}{<em>X</em> ≤ 1}{<em>X</em> > 1}</p>
<p>
<br>
What is the probability of this event? (Enter your answer to two decimal places.)
<br>
<em>P</em>(eat dinner together at home at least once a week) = </p>Statistics Answershttps://www.mathhomeworkanswers.org/230679/statistics-probability-helpThu, 03 Nov 2016 23:51:51 +0000a university has found that 10% of its students withdraw without completing the introductory statistics course. Assume that 10 students have registered for the course this quarter;
https://www.mathhomeworkanswers.org/227569/university-completing-introductory-statistics-registered
What is the probability that exactly three will withdraw?Statistics Answershttps://www.mathhomeworkanswers.org/227569/university-completing-introductory-statistics-registeredThu, 29 Sep 2016 17:50:40 +0000how many 4 digit numbers have no repeat digits, do not contain 0, and have a sum of digits equal to 28?
https://www.mathhomeworkanswers.org/226686/digit-numbers-have-repeat-digits-contain-have-digits-equal
how many 4 digit numbers have no repeat digits, do not contain 0, and have a sum of digits equal to 28?Calculus Answershttps://www.mathhomeworkanswers.org/226686/digit-numbers-have-repeat-digits-contain-have-digits-equalMon, 19 Sep 2016 12:47:47 +0000Probability problem
https://www.mathhomeworkanswers.org/226517/probability-problem
<p><span style="font-size:16px"> In John’s cattle pound, there are 5 bulls and 15 cows. In Jane’s cattle pound,
<br>
there are 2 bulls and 8 cows. John and Jane agree to exchange one animal
<br>
each. After John randomly selects one animal and sends it to Jane, Jane
<br>
randomly selects one animal and sends it to John.</span></p>
<p><span style="font-size:16px">(i) Draw the relevant sample space in a tree diagram.</span></p>
<p><span style="font-size:16px">(ii) Using it, find the probability of each of the following events.
<br>
(a) There being a reduction in the number of bulls in John’s pound
<br>
because of the exchange
<br>
(b) There being an increase in the number of bulls in John’s pound
<br>
because of the exchange
<br>
(c) There being no difference in the number of bulls and cows in each of the
<br>
two pounds because of the exchange</span></p>
<p><span style="font-size:16px">(iii) Now suppose they exchange animals in a way different to that mentioned
<br>
above. Suppose John and Jane randomly take one animal from each of
<br>
their pounds and go to their friend Adam’s house and exchange the cattle
<br>
there and bring the exchanged cattle back to the pound. Find the probabilities
<br>
of the events given in (ii) above for this random experiment. </span></p>Statistics Answershttps://www.mathhomeworkanswers.org/226517/probability-problemFri, 16 Sep 2016 08:32:35 +0000Probability Question
https://www.mathhomeworkanswers.org/226507/probability-question
<p>The sample space S of a random experiment is {1, 2, 3, 4, 5, 6, 7, 8}. Assuming that the outcomes of this experiment are equally likely, answer the question given below. </p>
<p><span style="line-height:1.6em">X is another event with P(X) = 0.7. Write two events that X could be</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/226507/probability-questionThu, 15 Sep 2016 19:06:38 +0000If in an experiment is conducted, one and only one of the three mutually exclusive events A1, A2, and A3 can occur with these probabilities. P(A1)=0.2 P (A2)=0.5 and P(A3)=0.3.
https://www.mathhomeworkanswers.org/226375/experiment-conducted-mutually-exclusive-events-probabilities
<p>If in an experiment is conducted, one and only one of the three mutually exclusive events A1, A2, and A3 can occur with these probabilities. P(A1)=0.2 </p>
<p>P (A2)=0.5 and P(A3)=0.3.</p>
<p>The probability of a fourth event B occurring, given that events A1, A2, or A3 occurs are P(B|A1)=0.2 P(B|A2)=0.1 P(B|A3)=0.3</p>
<p>(i). Find P(B). <strong>(2.5 points)</strong></p>
<p>(ii). Find P(A1|B).<strong> (2.5 points)</strong></p>
<p>(iii). Find P(A2|B).<strong> (2.5 points)</strong></p>
<p>(iv). Find P(A3|B).<strong> (2.5 points)</strong></p>Statistics Answershttps://www.mathhomeworkanswers.org/226375/experiment-conducted-mutually-exclusive-events-probabilitiesWed, 14 Sep 2016 04:58:47 +0000Draw an ogive and find the median and the no. of students who failed
https://www.mathhomeworkanswers.org/226072/draw-an-ogive-and-find-the-median-and-the-students-who-failed
<p>The marks obtained by 100 students in a mathematics test are give below:</p>
<table border="1" cellpadding="5" cellspacing="5" style="width:600px">
<tbody>
<tr>
<td>Marks</td>
<td>0-10</td>
<td>10-20</td>
<td>20-30</td>
<td>30-40</td>
<td>40-50</td>
<td>50-60</td>
<td>60-70</td>
<td>70-80</td>
<td>80-90</td>
<td>90-100</td>
</tr>
<tr>
<td>
<p>No. of Students</p>
</td>
<td>3</td>
<td>7</td>
<td colspan="1" rowspan="1">12</td>
<td>17</td>
<td>23</td>
<td>14</td>
<td>9</td>
<td>6</td>
<td>5</td>
<td>4</td>
</tr>
</tbody>
</table>
<p>Draw an ogive for the given distribution on a graph sheet.</p>
<p>Use scale of 2cm=10units on both the axes.</p>
<p>Use the ogive to estimate:</p>
<p>a. median</p>
<p>b. number of students failed, if the pass peercentage was 35.</p>Statistics Answershttps://www.mathhomeworkanswers.org/226072/draw-an-ogive-and-find-the-median-and-the-students-who-failedFri, 09 Sep 2016 12:08:56 +0000trying to determine the statistical significance of an equation
https://www.mathhomeworkanswers.org/224671/trying-determine-the-statistical-significance-an-equation
~~1) You are trying to determine the statistical significance of an equation. Given the following information, test the slope of the equation at the 90% level of confidence. Select the correct answer out of each pair of choices.<br />
<br />
Cost = 153.58 + 1.58 (Power) n=12 Sb1 = 17.669<br />
<br />
<br />
<br />
The tp is 1.812<br />
<br />
The tp is 1.476<br />
<br />
<br />
The tc is 0.089<br />
<br />
The tc is 81.088<br />
<br />
<br />
We would reject the null hypothesis<br />
<br />
We would fail to reject the null hypothesis<br />
<br />
<br />
We would consider using the equation<br />
<br />
We would not use the equationStatistics Answershttps://www.mathhomeworkanswers.org/224671/trying-determine-the-statistical-significance-an-equationThu, 21 Jul 2016 15:06:43 +0000an allergist claims that 50% of ht patients she tests are allergic to some type of weed. what is the probability that exactly 3 of the next 4 patients are allergic to weed
https://www.mathhomeworkanswers.org/224343/allergist-patients-allergic-probability-patients-allergic
an allergist claims that 50% of the patients she tests are allergic to some type of weed. what is the probability that:<br />
<br />
a. exactly 3 of the next 4 patients are allergic to weeds.<br />
<br />
b. non of her next 4 patients are allergic to weedsStatistics Answershttps://www.mathhomeworkanswers.org/224343/allergist-patients-allergic-probability-patients-allergicTue, 28 Jun 2016 05:53:28 +0000Poisson distribution with an average of 7.7 patients every 30 minutes. What is the probability that there are exactly 13 patients entering the room in the next 60 minutes?
https://www.mathhomeworkanswers.org/223953/distribution-patients-probability-exactly-patients-entering
answer has to be round to 4 decimal places it is a probability equationWord Problem Answershttps://www.mathhomeworkanswers.org/223953/distribution-patients-probability-exactly-patients-enteringMon, 06 Jun 2016 21:43:10 +0000Compute Cov(X,Y).
https://www.mathhomeworkanswers.org/220578/compute-cov-x-y
A2. The random variables X and Y have a joint density fn. Given by f(X,Y)={ 2(e^-2x)/x where 0≤XStatistics Answershttps://www.mathhomeworkanswers.org/220578/compute-cov-x-yWed, 13 Apr 2016 14:41:28 +0000C = 7.00 + 0.0742N. where N denotes the number of units, N is modelled as a random variable with mean 600 and variance 250. fine the mean and variance of the charges C in their respective units
https://www.mathhomeworkanswers.org/220197/denotes-modelled-variable-variance-variance-charges-respective
C = 7.00 + 0.0742N. where N denotes the number of units, N is modelled as a random variable with mean 600 and variance 250. fine the mean and variance of the charges C in their respective unitsStatistics Answershttps://www.mathhomeworkanswers.org/220197/denotes-modelled-variable-variance-variance-charges-respectiveThu, 07 Apr 2016 17:17:07 +0000let the random variable X have a mean of m and variance n^2. define Y=a+bx where a and b are constants satisfying -∞<a<∞ and b>0. select a and b so that Y has a mean of zero and variance equal to one.
https://www.mathhomeworkanswers.org/219854/random-variable-variance-define-constants-satisfying-variance
<p><span style="font-family:arial,helvetica,sans-serif">statistical theory</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/219854/random-variable-variance-define-constants-satisfying-varianceTue, 05 Apr 2016 02:18:35 +0000Please help with this statistics HW questions.
https://www.mathhomeworkanswers.org/219267/please-help-with-this-statistics-hw-questions
<p style="text-align:justify">For each of the following, choose from “increase, decrease, stays the same, not enough information”</p>
<p style="text-align:justify"> </p>
<p style="text-align:justify">A) What happens to the absolute value of Z<span style="font-size:8px">obt</span> as the difference between the population and sample means decreases?</p>
<p style="text-align:justify">B) What happens to the value of Z<span style="font-size:8px">obt</span> as the difference between the population and sample means increases?</p>
<p style="text-align:justify">C) What happens to the probability of rejecting the null as sigma increases?</p>
<p style="text-align:justify">D What happens to the probability of rejecting the null as alpha increases?</p>
<p style="text-align:justify">E) What happens to Z<span style="font-size:8px">crit</span> as alpha decreases?</p>
<p style="text-align:justify">F) What happens to the absolute value of Z<span style="font-size:8px">crit</span> as alpha decreases?</p>
<p style="text-align:justify">G) What happens to Power as the chance of a type 2 error increases?</p>
<p style="text-align:justify">H) What happens to sigma when the alpha value is decreased?</p>Statistics Answershttps://www.mathhomeworkanswers.org/219267/please-help-with-this-statistics-hw-questionsSat, 26 Mar 2016 07:13:09 +0000I have 10 variables showing assets for some persons and I want to rank these persons according to there assets
https://www.mathhomeworkanswers.org/218676/variables-showing-assets-persons-persons-according-assets
I collected about 10 variables from about 100 persons about there assets because I want to rank these persons from poor to rich according to there assetsStatistics Answershttps://www.mathhomeworkanswers.org/218676/variables-showing-assets-persons-persons-according-assetsThu, 17 Mar 2016 16:30:57 +0000How do you solve this equation 62.4 + (-0.67) (2.9)
https://www.mathhomeworkanswers.org/216380/how-do-you-solve-this-equation-62-4-0-67-2-9
I don't understand this equation...the results found in my text is ≈ 68.35Statistics Answershttps://www.mathhomeworkanswers.org/216380/how-do-you-solve-this-equation-62-4-0-67-2-9Tue, 01 Mar 2016 15:22:29 +0000The lengths of nails produced in a factory are normally distributed with a mean of 4.63 cm and a standard deviation of 0.06 cm. find the two lengths that separate the top 7% and the bottom 7%
https://www.mathhomeworkanswers.org/215690/produced-normally-distributed-standard-deviation-separate
Normally distributedStatistics Answershttps://www.mathhomeworkanswers.org/215690/produced-normally-distributed-standard-deviation-separateTue, 23 Feb 2016 17:30:14 +0000Use a binomial probabilities table to find the probability of x successes given the probability p of success on a given trial. nequals=22, xequals=11, pequals=0.10
https://www.mathhomeworkanswers.org/214279/binomial-probabilities-probability-successes-probability
<p><span style="background-color:transparent !important; font-family:arial">Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of success on a given trial.</span></p>
<p><span style="background-color:transparent !important; font-family:arial">n</span><span style="background-color:transparent !important; font-family:arial">=</span><span style="background-color:rgba(0, 0, 0, 0) !important; font-family:arial">2</span><span style="background-color:transparent !important; font-family:arial">, </span></p>
<p><span style="background-color:transparent !important; font-family:arial">x</span><span style="background-color:transparent !important; font-family:arial">=</span><span style="background-color:rgba(0, 0, 0, 0) !important; font-family:arial">1</span><span style="background-color:transparent !important; font-family:arial">, </span></p>
<p><span style="background-color:transparent !important; font-family:arial">p</span><span style="background-color:transparent !important; font-family:arial">=</span><span style="background-color:rgba(0, 0, 0, 0) !important; font-family:arial">0.10</span></p>
<p><span style="background-color:rgba(0, 0, 0, 0) !important; font-family:arial">P(1) =?</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/214279/binomial-probabilities-probability-successes-probabilityWed, 10 Feb 2016 08:32:26 +0000Use a binomial probabilities table to find the probability of x successes given the probability p of success on a given trial. n=4, x=4, p=
https://www.mathhomeworkanswers.org/214278/binomial-probabilities-probability-successes-probability
<p><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">Assume that a procedure yields a binomial distribution with a trial repeated n times. Use a binomial probabilities table to find the probability of x successes given the probability p of success on a given trial.</span></p>
<p><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">n</span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">=</span><span style="background-color:rgba(0, 0, 0, 0) !important; color:rgb(0, 0, 0); font-family:arial">4</span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">, </span></p>
<p><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">x</span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">=</span><span style="background-color:rgba(0, 0, 0, 0) !important; color:rgb(0, 0, 0); font-family:arial">4</span><span style="background-color:transparent !important; color:rgb(0, 0, 0); font-family:arial">, </span></p>
<p><span style="color:rgb(0, 0, 0); font-family:arial">p</span><span style="color:rgb(0, 0, 0); font-family:arial">=0.60</span></p>
<p><span style="color:rgb(0, 0, 0); font-family:arial">P(4)= ?</span></p>
<p><span style="color:rgb(0, 0, 128); font-family:arial">(Round to three decimal places as needed.)</span></p>Statistics Answershttps://www.mathhomeworkanswers.org/214278/binomial-probabilities-probability-successes-probabilityWed, 10 Feb 2016 08:29:47 +0000Suppose that X and Y have joint pdf f(x,y)=8xy , 0<y<x<1 , 0 otherwise
https://www.mathhomeworkanswers.org/209197/suppose-that-x-and-y-have-joint-pdf-f-x-y-8xy-0-y-x-1-0-otherwise
<p>Suppose that X and Y have joint pdf f(x,y)=8xy , <span style="font-family:timesnewromanpsmt; font-size:12.000000pt">0</span><span style="font-family:symbol; font-size:12.000000pt"><</span><em>y</em><span style="font-family:symbol; font-size:12.000000pt"><</span><em>x</em><span style="font-family:symbol; font-size:12.000000pt"><</span><span style="font-family:timesnewromanpsmt; font-size:12.000000pt">1 , 0 otherwise</span></p>
<p><span style="font-family:timesnewromanpsmt; font-size:12.000000pt">a. </span><span style="font-size:12pt">Find the joint CDF. </span></p>
<p><span style="font-size:12pt">b. </span><span style="font-size:12pt">Find P(X </span><span style="font-family:symbol; font-size:12pt">≤ </span><span style="font-size:12pt">0.5 | Y = 0.65).</span></p>
<p><span style="font-size:12pt">c. Find P(X </span><span style="font-family:symbol; font-size:12.000000pt">≤ </span><span style="font-size:12pt">0.5 | Y </span><span style="font-family:symbol; font-size:12.000000pt">≤ </span><span style="font-size:12pt">0.65). </span></p>
<p> </p>Statistics Answershttps://www.mathhomeworkanswers.org/209197/suppose-that-x-and-y-have-joint-pdf-f-x-y-8xy-0-y-x-1-0-otherwiseThu, 19 Nov 2015 21:47:38 +0000Let X and Y be continuous random variables with joint pdf of the form f(x, y) = c(x+y) 0 < x < y < 2 and zero otherwise.
https://www.mathhomeworkanswers.org/209189/continuous-random-variables-with-joint-form-zero-otherwise
<ol>
<li>
<p><span style="font-size:12pt">Let X and Y be continuous random variables with joint pdf of the form f(x, y) = </span></p>
</li>
</ol>
<p><span style="font-family:timesnewromanpsmt; font-size:12.000000pt">c(x+y) 0 < </span><span style="font-family:timesnewromanpsmt; font-size:12pt">x < y < 2 and zero otherwise.</span></p>
<p><span style="font-family:timesnewromanpsmt; font-size:12.000000pt">a.Find c so that f(x, y) is a joint pdf. Find the marginal pdf’s.
<br>
b.Find the joint CDF.
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c.Find the conditional pdf of Y given x. </span></p>
<p><span style="font-family:timesnewromanpsmt; font-size:12.000000pt">d.Find the conditional pdf of X given y. </span></p>Statistics Answershttps://www.mathhomeworkanswers.org/209189/continuous-random-variables-with-joint-form-zero-otherwiseThu, 19 Nov 2015 20:04:58 +0000