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14. Let Yj, Y2, .... Yn iid Bernoulli(p). Find the moment-generating function for X = Y, + Yz + +Y . What is the distribution

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14. Let Yj, Y2, .... Yn iid Bernoulli(p). Find the moment-generating function for X = Y, + Yz + +Y . What is the distribution of X? 15. Let Yj, Y2, .... Yn Geometric(p). Find the moment-generating function for W = Y,+Yz+ +Yr . What is the distribution of W? 16. Let Yj, Y2,..., Yn ~ Exponential(B). Find the moment-generating function for V = Y+Yz+ +Y . What is the distribution of V

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