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Let Y = X 2 with being a Poisson random variable that has parameter 7, and let Z = 2W + 3, where W is

Let Y = X 2 with being a Poisson random variable that has parameter 7, and let Z = 2W + 3, where W is a geometric random variable with parameter p. (a) [5 points] Calculate E[Y]. (b) [5 points] Calculate E[Z]. (c) [5 points] Calculate var(Z)

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