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Let (X, Y ) have joint PDF f(x,y) = re - for r > 0, y > 0 and f(r, y) =0 otherwise. (a) Compute

Let (X, Y ) have joint PDF f(x,y) = re -" for r > 0, y > 0 and f(r, y) =0 otherwise. (a) Compute the marginal PDFs of X and Y. (b) Determine whether X and Y are independent

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