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Random Variableshard
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Let XXX have the moment generating function MX(t)=(1−4t)−2.5M_X(t) = (1 - 4t)^{-2.5}MX​(t)=(1−4t)−2.5 for t<0.25t < 0.25t<0.25. What is Var(X)Var(X)Var(X)?