Random variables X and Yhave the joint PMF
Px,y (x,y) = {(c|x + yl x = -1,0,1 0 y = -2,0,2 otherwise a. What is the value of the constant c? b. What is P [Y < X]? c. What is P [Y > X]? d. What is P [Y = X]? e. What is P [X < 1]? f. Find the marginal PMFs Px(x) and Py(y) g. Find the expected values E[X] and E[Y] h. Find the standard deviations Ox and Oy