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Question: And more tennis. Suppose the tennis player in Exercise serves 80 times in a match.

a) What are the mean and standard deviation of the number of good first serves expected?

b) Verify that you can use a Normal model to approximate the distribution of the number of good first serves.

c) Use the 68 95 99.7 Rule to describe this distribution.

d) What's the probability she makes at least 65 first serves?

Exercise: Tennis, anyone? A certain tennis player makes a successful first serve 70% of the time. Assume that each serve is independent of the others. If she serves 6 times, what s the probability she gets

a) all 6 serves in?

b) exactly 4 serves in?

c) at least 4 serves in?

d) no more than 4 serves in?

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