2- Suppose that (a) 8/3 a is a joint probability mass function of two random variables X and Y. Then E(Y|X= 1) is O b C f(x, y) = O d 1/12, (1,2), (3,2) 1/6 1/3 0 , (2,2), (3,3), (1,3) , (2,4) , otherwise (b) 1/4 (c) 5/7 (d) 1/2

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