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Let X be a discrete random variable with mass probability distribution function: 1 2 4 (f(x 4/10 1/10 3/10 2/10 Find expected value of X,

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Let X be a discrete random variable with mass probability distribution function: 1 2 4 (f(x 4/10 1/10 3/10 2/10 Find expected value of X, E(X)=? 3 2 O 5 2 O 70 42 O 24 10 0 23 10 0

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