Fx,y(x, y) = (1-e-ax)(1-e-by) x = 0, y 0 0 otherwise 2- The CDF of (X,Y) are given above. Solve the following questions in terms of a and b a. What are the marginal CDFs of X and Y. b. Show whether they are independent or not. C. Find the probabilities of P(X 1, Y 1), P(X 2) and P(1 X 3, 2 y 5) by using the given CDF.