Question: Answer all questions with explanation Discrete random variables X1 .... Xn are all independent and identify distributed with distribution X' and 1, .. ..

Answer all questions with explanation

Discrete random variables X1 .... Xn are all independent and identify distributed with distribution " X' and 1, .. .. Im are also independent and identify distributed with distribution ' y'. Alpha is a constant show that @ var (x- QE (x)) = var (x ) 6 var(X- Y) = var(x ) + var ( Y) What assumption are you making about the variance of X and Y

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