Consider the bivariate PMF: PXY y = di y =d2 y = d3 x = -d2 1/4 1/8 0 x = d2 0 1/2 1/8 (A) Find the marginal PMF Px () and py(y), being sure to state their sample spaces. (B) Find the expected values E[X] and E[Y]. (C) Find the standard deviations ox and oy. (D) Find the covariance cov(X, Y). (E) Find the correlation coefficient and interpret this in terms of the relation between X and Y. (F) Find the variance Var 3X - 2Y]