Question: Problem 7. The mgf and the mean associated with a discrete random variable X are given by Mx(t) = ae' + be* D, E[X] =

Problem 7. The mgf and the mean associated with a discrete random variable X are given by Mx(t) = ae' + be* D, E[X] = 3. Find: (a) the scalar parameters a and b; (b) P(X =1) and E[X?]. () P(X+Y = 2), where Y is a random variable that is independent of X and is identically distributed to X

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