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Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.2, 0.4, and 0.4, respectively. what is the expected number of books a customer will purchase? the standard deviation of the customer's book purchases is
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Suppose that the probabilities of a customer purchasing 0, 1, or 2 books at a book store are 0.2, 0....
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