occurs whenever an outcome differs from the one preceding it. For instance, if the results of the flips are H, H, T, H, T, H, H, T, then there are a total of five changeovers. If p = 1/2, what is the probability there are k changeovers? rameter a = orders arrived 5. The number of orders waiting to be processed is given by a Poisson random variable with pa- where A is the average number of orders that arrive in a day, is the number Be processed by an employee per day, and n is the number of employees. Let A = 3 and == 1. Find the number of employees required so the probability that more than 4 orders are waiting is less than 0.9. What is the probability that there are no orders waiting? of orders that can CDF