Find the indicated probabilities using the geometric​ distribution, the Poisson​ distribution, or the binomial distribution. Then determine if the events are unusual. If​ convenient, use the app

Find the indicated probabilities using the geometric​ distribution, the Poisson​ distribution, or the binomial distribution. Then determine if the events are unusual. If​ convenient, use the appropriate probability table or technology to find the probabilities. The mean number of heart transplants performed per day in a country is about seven. Find the probability that the number of heart transplants performed on any given day is​ (a) exactly five​, ​(b) at least eight​, and​ (c) no more than three.