In a poll, adult men aged 25-35were asked, "If you go bald, will you consider hair transplant if you can afford it?" Thirty percent of them said, "Definitely."

Supposethis result is true for the current population of adult men aged 25-35. A random sample of 15 adult men aged 25-35 is selected.

Usethe binomial probabilities table or technology to find the probability that the number of men in this sample of 15 who will say definitely in response to the said question is:

a. At least 4

b. 1 to 3

c. At most 5