Suppose that X and Y are independent random variables with the same parameter p. What is the value of Want to make sure my solution is correct Correct?
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Originally Posted by I-Think Suppose that X and Y are independent random variables with the same parameter p. What is the value of Want to make sure my solution is correct Correct? careful with your denominator... the sum of geometric rvs (for n>=2) is given by: ,which is your denominator
Last edited by harish21; December 5th 2011 at 08:22 PM.
So the denominator becomes So the answer is 1?
Last edited by I-Think; December 5th 2011 at 08:57 PM. Reason: Didn't wrap in TEX tags
Originally Posted by I-Think So the denominator becomes \sum_{x=1}^{n-1} p(1-p)^{x-1} p {1-p}^{n-x-1}= \sum_{x=1}^{n-1} p^2{1-p}^{n} =p^2(1-p)^n So the answer is 1? No. try the calculations again.
Round 2 Denominator = And the final answer is
Originally Posted by I-Think Round 2 Denominator = And the final answer is
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