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Random Variablesmedium
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If a random variable XXX has a moment generating function MX(t)=exp⁡(μt+12σ2t2)M_X(t) = \exp(\mu t + \frac{1}{2}\sigma^2 t^2)MX​(t)=exp(μt+21​σ2t2), what is the coefficient of variation σXE[X]\frac{\sigma_X}{E[X]}E[X]σX​​?