please help me with work shown, I keep getting this answer wrong

7:03 PM Thu Mar 25 43% Content X ull View Submission | Gradesc X https://production-gradesco x + 3 0] = 1 and E[X] = E[Y] = 0, then Cov[X, Y] > 0. (b) We must have that fx(x) 0, ( x fx(x) dx = E[X|B]P[B] (d) If PIX 0 as well. (h) E[X + Y] = E[X] + E[Y] + 2Cov[X, Y] (i) If px,y = -1, E[X|Y = y] = -~ + b for some choice of b. (j) If Z = 2, is a standard Gaussian random vector and X = then X1 and X2 are independent. OPEN IN