The mean number of births per minute in the United States in a recent year was about eight. Find the probability that the number of births in any given minute is
(a) Exactly five,
(b) At least five,
(c) More than five.
Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine whether the events are unusual. If convenient, use a table or technology to find the probabilities.