a problem with functions of binomials.
- From: claudia.giovannoni@xxxxxxxxx
- Date: 16 Aug 2006 06:34:04 -0700
A question with functions of binomial random variables.
Let aj be the generic coefficient of a Binomial with parameters n and
p.
Similarly, let bj be the generic coefficient of a Binomial with
parameters (n+1) and p.
Now, let t be a positive real number and define the function H(y) as
the integral from 0 to y of the CUMULATIVE of a Normal distribution
with mean m and variance s^2.
Note that for any strictly positive t
Sum from 0 to n of ajx(tj/n) = Sum from 0 to n+1 of bjx(tj/n+1)=tp.
Ideally, what I want to show is that for any strictly positive t
Sum from 0 to n of ajxH(tj/n) > Sum from 0 to n+1 of bjxH(tj/n+1)
Alternatively, it will suffice to show that the difference is never
zero.
I have done many numerical simulations and the result always comes up.
Can anybody help?
Thank you.
.
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