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R5. Let X and Y be random variables such that the variance of X is 15, the variance of Y is 6, and the covariance

R5. Let X and Y be random variables such that the variance of X is 15, the variance of Y is 6, and the covariance of X with Y is 2. Find the covariance of 3X + Y with X - Y. O 33 35 36 O 34

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