- #1
elmarsur
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Homework Statement
A random variable X has the generating function
f(z) = 1 / (2-z)^2
Find E(X) and Var(X).
Homework Equations
The Attempt at a Solution
Would anyone explain in simpler terms the notion of the generating function, such that I may be able to solve problems? All I have found were proofs, but nothing of practical use.
Thank you very much!