the sum of 19 and the cube of a number x

Question

I don't know that's all

Answer 1

x³ + 19 {x cubed plus 19}
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Answer 2

Let x be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of x appears in the table shown below:

x	1	2	3	4	5	6	7
p(x)	.04	.05	.08	.26	.39	.16	.02

(a) What is P(x = 4)?
P(x = 4) =  

(b) What is P(x  4)?
P(x  4) =  

(c) What is the probability that the selected student is taking at most five courses?
P(at most 5 courses) =  

(d) What is the probability that the selected student is taking at least five courses? more than five courses?
P(at least 5 courses) =  
P(more than 5 courses) =  

(e) Calculate P(3  x  6) and P(3 < x < 6).
P(3  x  6) =  
P(3 < x < 6) = 

 

Answer 3

Let x be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of x appears in the table shown below:

x	1	2	3	4	5	6	7
p(x)	.04	.05	.08	.26	.39	.16	.02

(a) What is P(x = 4)?
P(x = 4) =  

(b) What is P(x  4)?
P(x  4) =  

(c) What is the probability that the selected student is taking at most five courses?
P(at most 5 courses) =  

(d) What is the probability that the selected student is taking at least five courses? more than five courses?
P(at least 5 courses) =  
P(more than 5 courses) =  

(e) Calculate P(3  x  6) and P(3 < x < 6).
P(3  x  6) =  
P(3 < x < 6) =