Pxr (x, y) X=0 X=2 y=-2 0.1 0.05 y=-1 0.1 y=1 0.1 0.2 y=2 0.2 0.05 0.05 (a) (1%) Find the missing joint PMF value, B = Submit Answer Tries 0/2 (b) (2%) Find the marginal PMF of X. PX(0) Px(1) PX (2 ) Submit Answer ) Tries 0/2 (c) (2%) Find the marginal PMF of Y. py(-2) py(-1) py(1) py(2) Submit Answer Tries 0/2 (d) (1%) Find the probability that the sum X+Y is a strictly negative number, P[X+Y \\it 0] = Submit Answer Tries 0/2 (e) (2%) Find the expected value E[XY]. Give at least 2 fractional digits. E[XY] = Submit Answer Tries 0/2 (f) (2%) Find the covariance of the random variables X and Y, Cov(X,Y), same as oxy. You will first have to find the means of X and Y. Give at least 2 fractional digits. Oxy =