(a) (4 points). Let X and Y be independent random variables with E(X) = 0.5, E[Y) = 0.8, V(X) = 1.3, and V(Y) = 0.9. Then, E(2X 1.5Y) = , V(2X 1.5Y) = , Cov(X, 2X 1.5Y) = , and Cor(X, 2X 1.5Y} =