See 6.7 here: http://www.am.qub.ac.uk/users/g.gribakin/sor/Chap6.pdf
Can someone explain to me how this problem works?
Given the moment generating function Mx(t)=e^(3t+8t^2), find the moment generating function of the random variable Z=1/4(X-3) and use it to determine the mean and the variance of Z.
I don't understand why its asking you to find another mgf if one is given to you already. Thanks!
See 6.7 here: http://www.am.qub.ac.uk/users/g.gribakin/sor/Chap6.pdf
Hm, so I read through what was posted and my textbook, but I still don't quite understand. So I have the MGF of X, then to get the MGF of Z do I need to integrate Z from negative to positive infinity and somehow subsitute in X? This is really confusing me, any help is appreciated thanks!
You're probably expected to know and apply the result found at the bottom of page 1 here: http://web.as.uky.edu/statistics/use...320u04/mgf.pdf
In fact, it's the same result that I refered you to in my first reply. Did you in fact bother to click on the link and look at it?