Question: 5. Let X 5. Let xn, Let n 1, be a sequence of independent Poisson random variables, each with mean 5. N = xn 2

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5. Let xn, Let n 1, be a sequence of independent Poisson random variables, each with mean 5. N = xn 2 = 2, xn 1 = 1, xn = O}, i.e., N is the first time that the pattern 2, 1, 0 appears in the sequence. Find E[N]. 1

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