Question: Let X be a random variable with the following probability distribution. Value x of X P(X=x) -30 0.10 -20 0.25 -10 0.05 0 0.25

Let X be a random variable with the following probability distribution. Value x of X P(X=x) -30 0.10 -20 0.25 -10 0.05 0 0.25 10 0.35 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E(X) of X. E(X) = (b) Find the variance Var(X) of X. Var(x) =

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