Let X and Y be two continuous random variables with the joint probability distribution function: S(x, y) = {* + y. 0 SxS 1 and 0sys1 otherwise Suppose that the marginal functions are given by: g(x) = Osxs1 and h(y) = } 0sysi otherwise otherwise If E(XY) = Then Var(X – Y – 9) is equal to: O 24/144 20/144 None of these 131/144

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