Hi people, I was wondering if anyone could give me a hint with this problem.(adsbygoogle = window.adsbygoogle || []).push({});

A RV X has PGF Gx(s)= (4-s)/3(4-3s)

I need to get the P(X=i) from here. I know i can manipulate the above to get the sum to infinity of a geometric series, but i end up with the term

(4-s) still in the P(X=i) which i dont think can be right. Anybody got any hints on how to rearrange the above so as to eliminate the s in the numerator so I can obtain P(X=i)? Thanks a lot, Jack

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# Homework Help: P(X=i) from given PGF

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