Let X be a random variable with the following probability distribution. Value x of X P(X=x) 2 0.10 0.05 4 0.15 5 0.35 6 0.35 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(x) = 1 (b) Find the variance Var(X) of X. Var(X) = 0