I do not understand your MGF at all.
Hi everybody,
I have a question regarding how to proceed with the following problem. I am required to produce a moment generating function for the following problem. I would like to know if the operation I performed is valid for this question. I never understood mgf's that well.
Question:
A balanced coin is flipped repeatedly until a head appears. Let X denote the number of flips needed. Define Y = 2X-1.
Find the moment generating function for Y.
My reasoning:
This is a geometric distribution (discrete random variable).
I applied the definition of the m.g.f.
Note: I'm new to latex. Please consider the (2X-1) as raised to the power of e, along with the t.
Is this the valid first step for this problem, and others like it?
Thanks for your time!
And the mgf for a geometric distribution has been done, among other places, here: http://www.mathhelpforum.com/math-he...tribution.html