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Suppose that three in ten adults own an answering machine. A researcher selects a random sample of 38 adults, and is interested in the number

Suppose that three in ten adults own an answering machine. A researcher selects a random sample of 38 adults, and is interested in the number of people in the sample will own an answering machine. a) Find the probability that in a sample of 38, exactly 15 people own an answering machine. b) Find the probability that in a sample of 38, at most 15 people own an answering machine

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