Question: Assuming that for the random variables X and Y, we have E[(X Y)2] = 0, establish that P(X = Y) = 1. (Hint: Work

Assuming that for the random variables X and Y, we have E[(X − Y)2] = 0, establish that P(X = Y) = 1.

(Hint: Work with the random variable Z = X − Y.)

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