The mgf is given by I have the mean as is this correct??
Last edited by bigdoggy; Aug 24th 2009 at 03:47 AM.
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Hello, the best way to spot your mistake is that you show your working then we'll see what's wrong for your information, this is the mgf of the geometric distribution
For the mean and so and does that look correct?
okay, you changed your result... now it is correct. and it's positive, because (p is a probability, so necessarily )
Originally Posted by Moo okay, you changed your result... now it is correct. and it's positive, because (p is a probability, so necessarily ) Yeah, I spotted my mistake, but needed to check what I had is correct because I don't have the answer
Originally Posted by bigdoggy Yeah, I spotted my mistake, but needed to check what I had is correct because I don't have the answer i told you it was the mgf of a geometric distribution the article in wikipedia gives the variance, you could've checked
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