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Suppose X is O discrete random variable with pmf given by P[X=x]=%x, x=12,5. Find the following: I. E[X] 2_V[X] 3.E[3X 5X2 +1]

Suppose X is O discrete random variable with pmf given by P[X=x]=%x, x=12,5. Find the following: \"I. E[X] 2_V[X] 3.E[3X 5X2 +1]

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