Question: 1. A discrete random variable X has probability mass function p (20 ) = 2 2 for x = 1, 2, 3 0 otherwise. a)

1. A discrete random variable X has probability mass function p (20 ) = 2 2 for x = 1, 2, 3 0 otherwise. a) Compute c. b) Compute E(X). c) Compute Var(X)

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