Is the discrete random variable X has p.g.f Gx(s) what is the p.g.f of mX + n? I know the p.g.f is given by sum over k (p(k)*s^k) but I'm not sure where to go from here
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Originally Posted by James0502 Is the discrete random variable X has p.g.f Gx(s) what is the p.g.f of mX + n? I know the p.g.f is given by sum over k (p(k)*s^k) but I'm not sure where to go from here Let . Your definition for , i.e. sum over k (p(k)*s^k) can alternatively be written as where denotes expectation.
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