Question: Find the mgf for a random variable with a density: (i) f(x) = xex for x > 0. (ii) f(x; 2) = 2/ex2/22 for x

Find the mgf for a random variable with a density: (i) f(x) = xe−x for x > 0. (ii)

f(x; σ2) = 2/πe−x2/2σ2 for x > 0.

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