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I'm wondering if you can help me... I've been searching the web and
libraries.

I am looking for the proof for the Moment Generating Function of the
Negative Binomial Distribution.

m(t) = {[pexp(t)]/[1-qexp(t)]}^r

as well as proof of the

E[X] = r/p

and

V[X] = r(1-p)/p^2

Would you know where I might find them????

Any help would be appreciate, I've been looking in book stores, surfing
the net for weeks, and rummaging through libraries until my fingers
bleed.

Thank you, a desperate student.