Answer to Question #45893 in Statistics and Probability for anu

Question

Let X, and Y be two independent random variables such that E(X)=2, Var(X)=4, E(Y)=7, and Var(Y)=1. Find: 1). E(3X+7) and Var(3X+7) 2). E(5X+2Y-2) and Var(5X+2Y-2).
(b) If two random variables have the joint density
Find the probability that