Answer: Using Appendix B Data Sets. In Exercises 37 and 38, use the indicated data set
Chapter 7, Problem 38(choose chapter or problem)
Using Appendix B Data Sets. In Exercises 37 and 38, use the indicated data set from Appendix B. Arrival Delays Refer to Data Set 15 in Appendix B. A flight is considered on time if it arrives no later than 15 minutes after the scheduled arrivaltime. The last column of Data Set 15 lists arrival delays, so ontime flights correspond to values in that column that are 15 or less. Use the data toconstruct a 90% confidence interval estimate of the population percentage of ontime flights. Does the confidence interval describe the percentage ofontime flights for all American Airlines flights? Why or why not?
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