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Question 9 Let (X,Y) be a random variable with pmf given by Not yet answered Px, y(1, - 1) = 4 Marked out of 1.50 Px, y(1, 1) = 2 Flag question P x, Y (0,0 ) = - Then P(XY>0) is Select one: O a. 0.5 O b. 1 O C. 0.25 O d. 0