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8. (20 points total) Consider the random variable X with probability mass function Px(k) = 3 (3k+2) 0 for k = 0,1,2,3 otherwise (a) (5

8. (20 points total) Consider the random variable X with probability mass function Px(k) = 3 (3k+2) 0 for k = 0,1,2,3 otherwise (a) (5 points) What is the mean E[X]? (b) (5 points) What is the variance Var(X)? (c) (5 points) What is P[X 0|X

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