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The joint density of X and Y is f(x, y) = 4y/x , for 0 < y < x < 1 , 0 , otherwise.
The joint density of X and Y is
f(x, y) = 4y/x , for 0 < y < x < 1 ,
0 , otherwise.
(a) Compute E(X*Y ).
(b) Compute the marginal density of X.
(c) Compute E(Y |X = x) for 0 < x < 1.
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