Let X1 be a binomial random variable with n1 trials and p1 = 0.2 and X2 be an independent(adsbygoogle = window.adsbygoogle || []).push({});

binomial random variable with n2 trials and p2 = 0.8. Find the probability function of

Y = X1 + n2 – X2.

Exactly how does one calculate the mgf of (n2 - X2)?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Method of Moment Generating Function Help

**Physics Forums | Science Articles, Homework Help, Discussion**