It is known that a certain basketball player will successfully make a free throw 91.29% of the time. Suppose that the basketball player attempts to make 15 free throws. What is the probability that the basketball player will make at least 13 free throws?

ANSWER:

Let X be the random variable which denotes the number of free throws that are made by the basketball player. Find the expected value and standard deviation of the random variable.

E(X)= =