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Question 3 Suppose X, and X, have the joint pdf; 2, 0 Question 4 Let Xl and X2 be independent random variables, each with pdf;

Question 3 Suppose X, and X, have the joint pdf; 2, 0

Question 4 Let Xl and X2 be independent random variables, each with pdf; o, O < x < 00 elsewhere. If Yl = Xl X 2 and Y2 = Xl + X 2 , find the joint probability density function of Yl and Y2 . Next, find the marginal probability density of Yl and Y2 respectively.

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