Question
Tennis, anyone? A certain tennis player makes a suc-
cessful 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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