Question: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 30 0.05 40 0.20 50 0.30 60 0.10

Let X be a random variable with the following probability distribution. Value x of X P(X=x) 30 0.05 40 0.20 50 0.30 60 0.10 70 0.05 80 0.30 (a) Find the expectation E(X) of X, E(X) = (b) Find the variance Var(X) of X. Var(x) =

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