Question: Let X and X be two identically distributed random variables with a correlation coefficient equal to 1/3 Then the variance of 3X-X + 1 is

Let X and X be two identically distributed random variables with a correlation coefficient equal to 1/3 Then the variance of 3X-X + 1 is equal to

A) 6 Var(X)

B) 8Var (X)

C) 6 Var(X) - 1

D) 10 Var(X)

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