Let (X. Y) be a discrete random vector with a joint pmf: fxx(x, y) X 0 2 y 0 0.12 0.04 0.04 1 0.08 0.19 0.05 2 0.06 0.12 0.3 a) Find fx(x) and fr(y); b) Find f(ylx = 2); c) Find Var(Y); d) Find E(Y x=2); e) Find P(Y2); f) Find if X and Y are independent