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At Atlanta’s Hartsfield International Airport, airport officials monitor the average time taken to get passenger checked luggage to the luggage belt after a flight arrival. Last year, the average time was 15 minutes. This year, a sample of 35 flights yielded a sample mean of 17 minutes and a sample standard deviation of 5 minutes. At the 5% level of significance, can you conclude that the average time to get luggage to the belt has changed from last year? How about at the 1% significance level?

At Atlanta’s Hartsfield International Airport, airport officials monitor the average time taken to get passenger checked luggage to the luggage belt after a flight arrival. Last year, the average time was 15 minutes. This year, a sample of 35 flights yielded a sample mean of 17 minutes and a sample standard deviation of 5 minutes. At the 5% level of significance, can you conclude that the average time to get luggage to the belt has changed from last year? How about at the 1% significance level?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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At Atlanta’s Hartsfield International Airport, airport officials monitor the average time taken to get passenger checked luggage to the luggage belt after a flight arrival. Last year, the average time was 15 minutes. This year, a sample of 35 flights yielded a sample mean of 17 minutes and a sample standard deviation of 5 minutes. At the 5% level of significance, can you conclude that the average time to get luggage to the belt has changed from last year? How about at the 1% significance level?
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