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Find the variance of a random variable

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Reference no: EM132855745

A statistician has a sample X1, . . . , Xn from N(µ, σ2 ). Also, the statistician has a sample Y1, . . . , Yk from an exponential distribution with parameter γ. Suppose that these samples are independent. Find the variance of a random variable Z = 3X¯ - 5Y.

Reference no: EM132855745

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