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7. Given a random variable X with pgf Pm) = g { (2;)2 +1} a) Find the mean and variance of X b) Find P(X

7. Given a random variable X with pgf Pm) = g { (2;)2 +1} a) Find the mean and variance of X b) Find P(X = 2) and P(X = 3). C) Can you nd an expression for P(X = k), k > 2

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