5. Let X be a non-central x2 (5, A) random variable, and Y, independent of X,...

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5. Let X be a non-central x2 (5, A) random variable, and Y, independent of X, be a x(4) randonm variable. (a). Derive the moment generating function of 2X - 1, and find its mean and variance. (b). Find the mean of W =

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