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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A: The joint probability mass function of x and y is, P(x,y)=x+y21;x=1,2 and y=1,2,3 x=1, y=1…

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Q: 5. If X and Y have the joint probability distribution f(x, y)=1/4, for x=-1and y=-1,x=-1 and y=1,x=1…

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Q: Q3// let X and Y have the joint probability distribution function as : . (х, у) (1,1) (1,2) (1,3)…

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Q: 7. If X is a random variable with fx Let Y = 3√In X. (a) Fx(x) ) = 1, 1<x<e (b) Fy(y) (c) fy(y)

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