D Question 2 1 pts Let X1, X2 be two random variables. Their joint probability density function is fx1,X2 (21, (2) = 1dze-A121-1272, x1 2 0, x2 2 0. Note that the marginal CDFs of X1 and X2 are Fx, (1) = (1 - e-dixi ) and FX2 (2) = (1 - e-2x2 ). Which of the following statements is FALSE? The joint cumulative distribution function of X1, X2 is FX1,X2 (X1, X2) = (1-e digi ) (1 - e A282 ) , x1 2 0, 22 20. OE(X1 | X2) + E(X1). O Cov (X1, X2) = 0. O The conditional probability density function of X1 given X2 is fxilX2=12 (21) = Mle-Aldi, x1 2 0, x2 2 0