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the joint density function 3. (15 pts) The joint density function of X and Y is (a2 +y?) if0 vX); (b) Compute E(XY); (c) Compute

the joint density function

3. (15 pts) The joint density function of X and Y is (a2 +y?) if0 vX); (b) Compute E(XY); (c) Compute Cov(X, Y)

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