The Agency for Healthcare Research and Quality reported that 53% of people who had coronary bypass surgery in 2008 were over the age of 65. Fifteen coronary bypass patients are sampled.

Round all decimals to four places.

Answer 0.2030 What is the probability that exactly 8 of them are over the age of 65?

Answer What is the probability that fewer than 10 are over the age of 65?

Answer What is the probability that more than 10 are over the age of 65?

Answer What is the probability that 11 or fewer are over the age of 65?

Answer Would it be unusual for more than 11 to be over the age of 65