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5. Suppose that X is a random variable taking the value 0 with probability 0.25 and the value 5 with probability 0.75. (a) What is

5. Suppose that X is a random variable taking the value 0 with probability 0.25 and the value 5 with probability 0.75. (a) What is E(X )? (b) What is E(X2) ? (c) What is E(ex)? (d) What is the MGF of X

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