Math Homework Answers - Recent questions tagged statistics problems
https://www.mathhomeworkanswers.org/tag/statistics+problems
Powered by Question2Answerwhile testing gas pumps for accuracy across the state, the research team found that out of 6985 pumps, 1299 were inaccurate. use a normal distribution and a known test statistic of z = –2.93.
https://www.mathhomeworkanswers.org/261441/testing-accuracy-research-inaccurate-distribution-statistic
while testing gas pumps for accuracy across the state, the research team found that out of 6985 pumps, 1299 were inaccurate. use a normal distribution and a known test statistic of z = –2.93. the claim is that less than 20% of the gas pumps across the state are inaccurate. use a 0.01 significance level. find the p-value.<br />
<br />
Answer was 0.0017 Please go through the processes of how that is the answer (step by step) so I can understandStatistics Answershttps://www.mathhomeworkanswers.org/261441/testing-accuracy-research-inaccurate-distribution-statisticSat, 18 May 2019 19:06:26 +0000assume the normal distribution applies to a scenario where you are given h1 p<0.08 in a test using a significance level of a=0.01. Find the critical z value(s)
https://www.mathhomeworkanswers.org/261439/assume-distribution-applies-scenario-significance-critical
assume the normal distribution applies to a scenario where you are given h1 p<0.08 in a test using a significance level of a=0.01. Find the critical z value(s)<br />
<br />
Answer is z=-2.33<br />
<br />
Why? Can you explain it (step by step) I'd like to understandStatistics Answershttps://www.mathhomeworkanswers.org/261439/assume-distribution-applies-scenario-significance-criticalSat, 18 May 2019 18:29:55 +0000the sample space of population being researched contains 58 values and a mean of 318.6.
https://www.mathhomeworkanswers.org/261409/sample-space-population-being-researched-contains-values
the sample space of population being researched contains 58 values and a mean of 318.6.The population has a known standard deviation of 29.2. Identify the margin of error for a 95% confidence interval estimate of the mean of the population.<br />
<br />
ANSWER = 7.5150<br />
<br />
I need the explanation and a step by step to better understnad why that is the answer. please help! I really want to understand this.Statistics Answershttps://www.mathhomeworkanswers.org/261409/sample-space-population-being-researched-contains-valuesFri, 17 May 2019 21:48:37 +0000College students' annual earnings: 98% confidence; n = 9, x = $3361, s = $865 a) $546 < σ < $1907 b) $526 < σ < $1693 c) $681 < σ < $1128 d) $584 < σ < $1657
https://www.mathhomeworkanswers.org/260943/college-students-annual-earnings-confidence-%241907-%241693-%241128
I need to find X2l and X2R for this Question!https://www.mathhomeworkanswers.org/260943/college-students-annual-earnings-confidence-%241907-%241693-%241128Mon, 06 May 2019 15:10:57 +0000In a random sample of 20 people, the mean tip that they said they would leave after a $30 meal was X bar = $3.75 and the standard deviation was s = $0.50.
https://www.mathhomeworkanswers.org/260178/random-sample-people-would-leave-after-standard-deviation
Assuming that tips are normally distributed, construct a 99% confidence interval on the population mean tip µhttps://www.mathhomeworkanswers.org/260178/random-sample-people-would-leave-after-standard-deviationSun, 14 Apr 2019 01:59:54 +0000Statistics question
https://www.mathhomeworkanswers.org/259937/statistics-question
An investigation has been carried out to compare the carbon monoxide emission levels (grams per mile) of two types of passenger cars. Twenty-five Model-A passenger cars and thirteen Model-B passenger cars were selected at random and the amount of carbon monoxide emitted from each car (cruising at 50 mph) was measured. Assume normality of the data.<br />
<br />
For Model A: n = 25, Σx = 495, Σx^2 = 9921<br />
<br />
For Model B: n= 13, Σx = 208, Σx^2 = 3472<br />
<br />
(a) Test the hypothesis, at the 0.05 level of significance, that the standard deviation of the amount of carbon monoxide emitted from Model-A passenger cars is less than 2.4 grams per mile.<br />
<br />
(b) At the 0.10 level of significance, test whether the variances of the carbon monoxide emission levels for the two models of cars are equal or not.<br />
<br />
x is the amount of carbon monoxide emitted.<br />
<br />
THANK YOU!!Statistics Answershttps://www.mathhomeworkanswers.org/259937/statistics-questionSun, 07 Apr 2019 16:01:16 +0000Find P(186 < X < 208) where the mean equals 200 and the standard deviation is 12.
https://www.mathhomeworkanswers.org/259512/find-186-208-where-the-mean-equals-200-and-standard-deviation
statsticsAlgebra 2 Answershttps://www.mathhomeworkanswers.org/259512/find-186-208-where-the-mean-equals-200-and-standard-deviationTue, 26 Mar 2019 14:47:58 +0000Suppose a variable X is normally distributed with a standard deviation of 10. Given that .0985 of the values of X are greater than 70, what is the mean value of X?
https://www.mathhomeworkanswers.org/259487/suppose-variable-normally-distributed-standard-deviation
Please respond it quickly and properly.Statistics Answershttps://www.mathhomeworkanswers.org/259487/suppose-variable-normally-distributed-standard-deviationTue, 26 Mar 2019 05:26:23 +0000what are values of a, b, d, e, and f in the table?
https://www.mathhomeworkanswers.org/259417/what-are-values-of-a-b-d-e-and-f-in-the-table
the following table represents the heights, in centimeters, of a sample of 100 high school male football players in the Tshwane north district of the Gauteng province in South Africa. height in centimeters frequency reltv frqnc 152.95less= xStatistics Answershttps://www.mathhomeworkanswers.org/259417/what-are-values-of-a-b-d-e-and-f-in-the-tableSun, 24 Mar 2019 10:46:54 +00004.1 i dentify the dependent and the independent variables.
https://www.mathhomeworkanswers.org/259415/4-1-i-dentify-the-dependent-and-the-independent-variables
the table below shows the price and overall quality rating for 15 different brands bike helmets. Helmets Price (dollars) quality rating A 35 QR 65 B 20 QR61 C 30 QR60 D 40 QR55 E 50 QR54 F 23 QR47 G 30QR 47 H 18 QR43 I 40 QR42 J 28QR 41 K 20 QR 40 L 25 QR32 M 30 QR63 N 30 QR63 O 40 QR53 4.1 identify the dependent and the independent variables. 4 .2 Draw a scatter plot of the sample data. 4.3 do you think that there is a statiatical relationship between price and quality rating? if so describe the nature of the relationship.NB- THE ALPHABETS REPRESENT EACH HELMET THE NUMBER NEXT TO QR IS QUALITY RATINGStatistics Answershttps://www.mathhomeworkanswers.org/259415/4-1-i-dentify-the-dependent-and-the-independent-variablesSun, 24 Mar 2019 08:32:20 +0000draw a back to back ordered stem and leaf diagram of this data.
https://www.mathhomeworkanswers.org/259413/draw-a-back-to-back-ordered-stem-and-leaf-diagram-of-this-data
Mr Qhubani sells fruits at the entrance of a university and a hospital. He wants to know whether the sales at the two locations differ. the following table is a summary of daily sales for 31 days, at the two locations. DAILY SALES FRUITS AT THE HOSPITAL IN RANDS. 125 130 145 165 167 179 158 171 178 170 168 172 170 175 170 170 175 179 178 175 175 170 130 145 179 171 165 160 176 176 165 daily sales of fruits at the university entrance in rands. 145 146 145 145 136 165 136 136 125 148 125 130 147 149 148 147 154 165 156 155 165 148 149 155 149 154 155 155 150 150 155 156 3.1 draw a back to back stem and leaf diagram of this data. 3.2 draw the box plot for the daily sales of fruits at the university entrance. List all the values needed for this plot.Statistics Answershttps://www.mathhomeworkanswers.org/259413/draw-a-back-to-back-ordered-stem-and-leaf-diagram-of-this-dataSun, 24 Mar 2019 08:18:12 +0000the following histogram shows the distribution of birth weight of 32 lambs with in some...
https://www.mathhomeworkanswers.org/259325/following-histogram-shows-distribution-birth-weight-lambs
what if you take a random sample of 10 from...Statistics Answershttps://www.mathhomeworkanswers.org/259325/following-histogram-shows-distribution-birth-weight-lambsThu, 21 Mar 2019 16:33:05 +0000consider rolling two seven-sided numbered polyhendrons ( sides labelled 1-7)
https://www.mathhomeworkanswers.org/259316/consider-rolling-seven-sided-numbered-polyhendrons-labelled
Consider rolling two seven-sided numbered polyhendrons (sides labelled 1-7). 1. Summarise all the possible outcomes using a table format. 2 Calculate the probability of tossing a 4 and a 2, order is important. 3. What is the probability that the sum of the two numbers will be an even number? 4. What is the probability that the sum of the two numbers will be an odd number? 5. What is the probability that the sum of the two numbers will be a multiple of 4? 6. What is the probability that the sum of the two numbers will be less than 8? 7. What is the probability that the sum of the two numbers will be at most 8?Statistics Answershttps://www.mathhomeworkanswers.org/259316/consider-rolling-seven-sided-numbered-polyhendrons-labelledThu, 21 Mar 2019 09:05:15 +0000Find the probability of obtaining exactly 4 heads in 10 flips of a coin
https://www.mathhomeworkanswers.org/258565/find-the-probability-of-obtaining-exactly-heads-flips-coin
How can I get the answerStatistics Answershttps://www.mathhomeworkanswers.org/258565/find-the-probability-of-obtaining-exactly-heads-flips-coinSun, 03 Mar 2019 19:37:39 +0000A statistics question
https://www.mathhomeworkanswers.org/258033/a-statistics-question
It is known that 18% of all calls coming into a telephone exchange are long-distance calls. During a certain period of time, 12 calls came into the exchange.<br />
<br />
1) What is the probability that at least 3 are long-distance calls?<br />
<br />
2) Find the probability of part (1) by using the normal approximation to binomial probabilities.<br />
<br />
3) Find the percentage error of the normal approximation.<br />
<br />
ThanksStatistics Answershttps://www.mathhomeworkanswers.org/258033/a-statistics-questionSun, 17 Feb 2019 07:41:22 +0000ststistics
https://www.mathhomeworkanswers.org/257167/ststistics
With a height of 64 in, Arthur was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 75.3 in and a standard deviation of 2.8 in. a. What is the positive difference between Arthur's height and the mean? b. How many standard deviations is that [the difference found in part (a)]? c. Convert Arthur's height to a z score. d. If we consider "usual" heights to be those that convert to z scores between minus2 and 2, is Arthur's height usual or unusual?Statistics Answershttps://www.mathhomeworkanswers.org/257167/ststisticsSun, 20 Jan 2019 00:56:17 +0000If 51.4% of adults ages 55 to 64 have hypertension in random sampling last year, researcher believe that percentage is lowered than reported
https://www.mathhomeworkanswers.org/255980/hypertension-sampling-researcher-percentage-lowered-reported
According to the U.S. department of Health and Human services, 51.4% of adults ages 55 to 64 have hypertension. A researcheer believes that the percentage is lower than reported.<br />
<br />
What is the specific claim to be tested?Statistics Answershttps://www.mathhomeworkanswers.org/255980/hypertension-sampling-researcher-percentage-lowered-reportedSat, 24 Nov 2018 08:28:32 +0000Statistics
https://www.mathhomeworkanswers.org/255888/statistics
Find the mean and standard deviation of 43.5,5.2,n=289Statistics Answershttps://www.mathhomeworkanswers.org/255888/statisticsMon, 19 Nov 2018 05:15:51 +0000Using the standard normal distribution, find each probability: p ( 0 < z < 2 . 23
https://www.mathhomeworkanswers.org/255711/using-standard-normal-distribution-find-each-probability
Using the Standard normal disstrution, how can I find probability?<br />
<br />
P(0<z<2.23)Statistics Answershttps://www.mathhomeworkanswers.org/255711/using-standard-normal-distribution-find-each-probabilityThu, 08 Nov 2018 23:45:23 +0000number of combinations without replacement excluding certain combinations
https://www.mathhomeworkanswers.org/254068/combinations-without-replacement-excluding-combinations
I would like to know if there is a formula for generating a number of combinations without replacement that exclude certain items. For example, list of 13 different types of fruits of which 6 would be generated for each list. However, certain items cannot appear together in the list. For example, bananas and apples can't be in the same list.Other Math Topicshttps://www.mathhomeworkanswers.org/254068/combinations-without-replacement-excluding-combinationsWed, 05 Sep 2018 01:08:28 +000010 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 10
https://www.mathhomeworkanswers.org/252557/10-12-10-8-16-16-8-12-6-16-12-12-12-10-22-8-20-16-12-14-6-12-18-16-10-8-12-10
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/following-information-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/following-information-formulation-intermediate-calculationsMon, 22 Jan 2018 21:29:32 +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-randomly
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-randomlyMon, 08 Jan 2018 20:57:31 +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">
<tbody>
<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-process-smaller-number-followed-larger
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-process-smaller-number-followed-largerThu, 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-process-smaller-number-followed-larger
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-process-smaller-number-followed-largerTue, 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-two-dice-the-second-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-two-dice-the-second-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 +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 +0000