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Exercise 2 (5 pts.). Sums of random variables. Suppose that X and Y are independent random variables with density functions fx (2 ) 2e-2x x

Exercise 2 (5 pts.). Sums of random variables. Suppose that X and Y are independent random variables with density functions fx (2 ) 2e-2x x 20 Aye -2y y 20 fy (y) = 10 y

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