Question 12 (1 point)

Question 12 options:

Let X be the number of courses taken by a part-time student at a college. The following table shows the probability distribution of X with probability as a percentage.

Number of Courses , x	1	2	3
Probability, P(X=x)	55%	28%	17%

What is the probability that a randomly selected part-time student at this college takes at least 2 courses? (That is, find P(X 2) (round to 2 decimal places)

Question 13 (1 point)

Question 13 options:

The random variable X = the number of vehicles owned. Find the expected number of vehicles owned. Round answer to two decimal places.

Number of Courses , x	0	1	2	3	4
Probability, P(X=x)	0.2	0.35	0.25	0.1	0.1

Question 14 (1 point)

Question 14 options:

If random variable X has a Poisson distribution with mean = 7, find the probability that X is more than 8. (That is, find P(X>8) (round to 4 decimal places) Answer: ____

Question 15 (1 point)

Question 15 options:

Computer Help Hot Line receives, on average, 14 calls per hour asking for assistance. What is the probability that the company will receive 3 calls in a 12 minute period? Round answer to 4 decimal places. Answer: