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Need help on statistics homework problem where given a joint pdf of X and Y, to find the conditional mean of E(Y|x), conditional variance Var(Y|x),

Need help on statistics homework problem where given a joint pdf of X and Y, to find the conditional mean of E(Y|x), conditional variance Var(Y|x), mean E[E(Y|X)] and variance Var[E(Y|X)]. Please be detailed so I can understand the problem. Thank you so much in advanced!

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2.3.8 Let X and Y have the joint pdf f(x,y) = 2exp{ (x + y)}, 0

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