4. (9 points) A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws. (a) (4 points) What is the probability that he will make more than 7 throws? Answer: The probability is (b) (2 points) How many baskets can the player expect to make if he takes 15 shots? Answer: The expected value is (3 points) What is the standard deviation of the number of successful free throws out of 15 total? Answer: The standard deviation is