This function returns a random integer from the negative binomial distribution, the number of failures occurring before n successes in independent trials with probability p of success. The probability distribution for negative binomial variates is,
Note that n is not required to be an integer.
This function computes the probability \(p(k)\) of obtaining \(k\) from a negative binomial distribution with parameters p and n, using the formula given above.
These functions compute the cumulative distribution functions \(P(k), Q(k)\) for the negative binomial distribution with parameters p and n.