- #1

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## Homework Statement

Suppose X is a discrete random variable whose probability generating function is

G(z) = z^2 * exp(4z-4)

## Homework Equations

No idea

## The Attempt at a Solution

I'm thinking that due to the exponent on the z term, that the exp(4z-4) would be the

P[X=3] = exp(4z-4), but i'm not even sure of this.

I honestly have no idea where to even start on a problem like this. Any sort of guidance would be great.