Suppose the joint probability distribution of X and Y is given by f(x,y) = x+y 90 for x 2, 3, 4, 5; y = 3, 4, 5. Complete parts (a) through (d). (a) Find P(X ≤4,Y=4). 7 P(X ≤4,Y=4)= (Simplify your answer.) 30 (b) Find P(X>4,Y≤4). 17 P(X>4,Y≤4)= (Simplify your answer.) 90 (c) Find P(X> Y). P(X>Y)= (Simplify your answer.)

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