First try replacing the factorials with appropriate gamma functions (factorial

is only defined for non-negative integers, you need something defined for all

reals in (0,n). Alternatively replace the integral with a summation from 0 to

n, which is 1 as you are summing the binomial distribution with parameters

n, p over all possible outcomes.

If the latter is the case, your original sum would heve been the mean of the

binomial distribution with probability of success on a single trial of p, and

a total of n trials, this is n*p.

RonL

RonL