Question 1: A delivery company is investigating how long it takes drivers to deliver goods from the factory to a port for export. From previous records, 4- randomly-selected delivery times along the same route (route A) yield a sample mean of 437.2 minutes and a sample standard deviation of 18.3 minutes. newly proposed route (route B) has been driven 34 times with a sample mean of 403.5 minutes and a sample standard deviation of 15.6 minutes. Calculate the 95% confidence interval to estimate the difference in average route times.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Question 1: A delivery company is investigating how long it takes drivers to deliver goods from the factory to a port for export. From previous records, 44
randomly-selected delivery times along the same route (route A) yield a sample mean of 437.2 minutes and a sample standard deviation of 18.3 minutes. A
newly proposed route (route B) has been driven 34 times with a sample mean of 403.5 minutes and a sample standard deviation of 15.6 minutes.
Calculate the 95% confidence interval to estimate the difference in average route times.
Transcribed Image Text:Question 1: A delivery company is investigating how long it takes drivers to deliver goods from the factory to a port for export. From previous records, 44 randomly-selected delivery times along the same route (route A) yield a sample mean of 437.2 minutes and a sample standard deviation of 18.3 minutes. A newly proposed route (route B) has been driven 34 times with a sample mean of 403.5 minutes and a sample standard deviation of 15.6 minutes. Calculate the 95% confidence interval to estimate the difference in average route times.
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