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This is a probability question from Math 370 Let X be a discrete random variable with moment generating function given by: Mx (1) =0.22 +0.27e'

This is a probability question from Math 370

Let X be a discrete random variable with moment generating function given by: Mx (1) =0.22 +0.27e' +0.19e# + ke". Given that E X] = 2.44 , find Var X]

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