Sixty-eight percent of parents of children ages 8–14 say they are willing to get a second or part-time job to pay for their children’s college education. You randomly select five parents. Find the probability that the number of parents who say they are willing to get a second or part-time job to pay for their children’s college education is

(a) Exactly three, 

(b) Less than four, and 

(c) At least three.

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.