Let x represent the number of times a customer visits a grocery store in a 1-week period. Assume this is the probability distribution of x . Find the expected value of x , the average number of times...

Letx represent the number of times a customer visits a grocery store in a 1-week period. Assume this is the probability distribution ofx. Find the expected value ofx, the average number of times a customer visits the store.

You know only that your colleague has three children. Suppose the chance of a child being a girl is ½. Letx be the number of girls in three children.

(a) Construct a probability distribution.

(b) Construct a histogram.

(c) What is the probability of having all three girls?

(d) Find the expected value of having girls in three children.