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Answer: In Exercises, assume that the paired sample data
Chapter 9, Problem 11BSC(choose chapter or problem)
In Exercises 9–20, assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.
Flight Operations The table below lists the times (min) required for randomly selected flights to taxi out for takeoff and the corresponding times
(min) required to taxi in after landing. (See Data Set 15 in Appendix B.) All flights are Flight 1 of American Airlines from New York (JFK) to Los Angeles
(LAX). Construct a 90% confidence interval estimate of the difference between taxiout times and taxiin times. What does the confidence interval
suggest about the claim of the flight operations manager that for flight delays, more of the blame is attributable to taxiout times at JFK than taxiin
times at LAX?
Questions & Answers
QUESTION:
In Exercises 9–20, assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.
Flight Operations The table below lists the times (min) required for randomly selected flights to taxi out for takeoff and the corresponding times
(min) required to taxi in after landing. (See Data Set 15 in Appendix B.) All flights are Flight 1 of American Airlines from New York (JFK) to Los Angeles
(LAX). Construct a 90% confidence interval estimate of the difference between taxiout times and taxiin times. What does the confidence interval
suggest about the claim of the flight operations manager that for flight delays, more of the blame is attributable to taxiout times at JFK than taxiin
times at LAX?
ANSWER:
Solution 11BSC