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Hello! I need help with following probability problem. Thank you in advance..! Suppose that X and Y are independent random variables with Mx(t) = My(t)

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Hello! I need help with following probability problem. Thank you in advance..!

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Suppose that X and Y are independent random variables with Mx(t) = My(t) (1 - 2t) -1/2, t 1/2. (a) (2 points) Find MX+y (t). (b) (4 points) Find E[(X + Y) 2]

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