Question

Let X and Y be jointly continuous random variables having joint density fxy(x,y) = 2 y + x1, x>0, y> O otherwise Find Cov(X,Y
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Answer #1

The answer is a) and we use the following formula to get the covariances Cov(X,Y)= E[XY] - E[X]E[Y] First, we can compute E/X

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