The mean number of droughts in Asia per year from 1980 through 2008 was about 3.24. Find the probability that the number of droughts in Asia in any given year from 1980 through 2008 are

(a) exactly two,

(b) at most two, and

(c) more than two.

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.