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Find the mean and variance of the following random variables. (i) XI(a, b), with I'(a, 3) being the gamma distribution with parameters a and

Find the mean and variance of the following random variables. (i) XI(a, b), with I'(a, 3) being the gamma distribution with parameters a and 3. (ii) E(X) = , Var(X) = o. Find mean and variance of Y = ax + b.

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