a. b. C. d. e. (0, O. W. Derive the marginal pdf of X₁. Derive the conditional pdf of X2|X1 X1 and calculate E[X2X1 X1]. Please Calculate E[X2] and demonstrate that E[E(X2X1)]=E[X₂]. Between Var[X2] and Var[X2|X1 X1], which one is bigger? Calculate P(0

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