Let X be a discrete random variable with a moment generating function MX(t) = 1/2 * e^(-t) + 1/3 * e^(-3t) + 1/6 * e^(3t). (a) Find E[X]. (b) Find Var[X]. (c) Find the moment generating function MY(t) of Y = 3X + 2 for t = 1.
Added by Jordi M.
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E[X] ?=? ? ?t ?=? 1 ? MX(t) ?=? 1 + 2e?t + 3e?3t Show more…
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