In: Statistics and Probability
(a) Let X be a binomial random variable with parameters (n, p). Let Y be a binomial random variable with parameters (m, p).
What is the pdf of the random variable Z=X+Y?
(b) Let X and Y be indpenednet random variables. Let Z=X+Y.
What is the moment generating function for Z in terms of those for X and Y?
Confirm your answer to the previous problem (a) via moment generating functions.