1) On-Time Flights According to flightstats.com, American Airlines flights from Dallas to Chicago are on time 80% of the time. Suppose 15 flights are randomly selected, and the number of on-time flights is recorded. (Show what calculator commands you used for each part of question 1.)

Find and interpret the probability that exactly 10 flights are on time. Find and interpret the probability that fewer than 10 flights are on time.Find and interpret the probability that at least 10 flights are on time.Findandinterprettheprobabilitythatbetween8and10flights,inclusive,areontime.

2) Morality In a recent poll, the Gallup Organization found that 45% of adult Americans believe that the overall state of moral values in the United States is poor.

Compute the mean and standard deviation of the random variable X, the number of adults who believe that the overall state of moral values in the United States is poor based on a random sample of 500 Adults.

Mean = _____________

Standard Deviation = _________________

• Interpret the mean.

• Would it be unusual to identify 240 adult Americans who believe that the overall state of moral values in the United States is poor based on a random sample of 500 adult Americans? Why?