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Suppose (X, Y, Z) is a random vector with covariance mati What is Var(X + 2Y)? 41 0 1 7 2 0 2 36 34

Suppose (X, Y, Z) is a random vector with covariance mati What is Var(X + 2Y)? 41 0 1 7 2 0 2 36 34 20 22 None of the other answers are correct

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