A telemarketing salesperson makes a series of telephone calls, some of which (successful calls) result in a sale, while others (unsuccessful calls) do not. The salesperson must fulfill a daily quota of 5 successful calls. On a given day, the number Y of unsuccessful calls made before this quota is fulfilled follows this particular negative binomial distribution: YO NegBinomial (0, m = 5) in the notation of BSM, Appendix A.1. Here, 0