What is a Poisson probability?
A Poisson probability refers to the probability of getting EXACTLY n successes in a Poisson experiment. Here, n would be a Poisson random variable. For instance, we might be interested in the number of phone calls received in an hour by a receptionist. Suppose we knew that she received 1 phone call per hour on average. We might ask: What is the likelihood next hour that she will receive EXACTLY 3 phone calls? The probability of getting EXACTLY 3 phone calls in the next hour would be an example of a Poisson probability. (Note: The Poisson probability in this example is equal to 0.061. See the above table.
