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Suppose the number of presents that Santa Claus will leave under each Christmas tree is Poisson distributed with a mean of 4.7 presents per

Suppose the number of presents that Santa Claus will leave under each Christmas tree is Poisson distributed with a mean of 4.7 presents per tree. C) Find the probability that he will leave at least two presents under a tree. at he will leave resents under D) Find the expected value and standard deviation of the number of presents that he will leave under each tree.

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