It is believed that 15 of people who fly on commercial airli

It is believed that 15% of people who fly on commercial airliners are \"very concerned\" about the safety of the carrier they have chosen. If this is accurate, what is the probability that out of 150 randomly selected people who fly on commercial airliners, between 20 and 25 of diem are \"very concerned\" about the safety of the carrier which they have chosen?

Solution