1. Suppose X, Y are two continuous random variables, with joint PDF fx, 1 (x, y) >: 0 and joint CDF Fxy(x, y). Inaddition, X has marginal PDF /x (x) > 0 and marginal COF Fx (2); 1 has marginal FOF Ty(y) > 0 and marginal COF Fy(1)- which statementis) is/are equivalent to _X" is independent with Y'? Select all that apply- X and Y is conditional independent give another random variable Z. For covariance, Cov (X,Y) = 0. For conditional PDF, /xy(aly) = fx(a)- For joint and marginal PDFs, fxy (m, y) = fx(a)fy(y)- For joint and marginal CDFs, Fx Y (z, y) = Fx (a) Fy (y). PX