A continuous variable Y has a probability density function for which the moment generating function is given by M(t)=e^(2*t+72*t^2).  What is the variance of the variable, Var[Y]?

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Chapter1: Combinatorial Analysis
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A continuous variable Y has a probability density function for which the moment generating function is given by M(t)=e^(2*t+72*t^2).

 What is the variance of the variable, Var[Y]?

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