The probability of an incorrect call by an NFL referee is
.025 (e.g., calling a pass complete, but the decision reversed on instant
replays). In a certain game, there are 150 plays. (a) What is the probability
of at least 4 incorrect calls by the referees? (b) Justify any assumptions that
you made. (See The New York Times, November 2, 2008, p. Y1.)
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