Statistics Question
posted by Sam on .
Consumer Reports rated airlines and found that 80% of flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the ontime rate is representive of the entire commercial airline industry, consider a random sample of 200 flights. What is the expected number that will arrive on time? What is the standard deviation of this distribution.

Consumer Reports rated airlines and found that 78% of the flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the ontime arrival rate is representative of the entire commercial airline industry, consider a random sample of 190 flights. (Round your answers to two decimal places.)