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If random variable X has mean 3 and variance 4 and random variable Y has mean 2 and variance 1, and if the covariance Cov

If random variable X has mean 3 and variance 4 and random variable Y has mean 2 and variance 1, and if the covariance Cov (X, Y ) - 1, find the mean and variance of the random variable X + 2Y

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