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Name: A delivery company claims that the mean time it takes to deliver froze
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A delivery company claims that the mean time it takes to deliver frozen food between two particular cities is 4 hours. A consumer advocacy group wishes to show at the 5% level that the mean time is greater than 4 hours. A random sample of 50 deliveri

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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A delivery company claims that the mean time it takes to deliver frozen food between two particular cities is 4 hours. A consumer advocacy group wishes to show at the 5% level that the mean time is greater than 4 hours. A random sample of 50 deliveries yielded a sample mean of 4.2 hours with a standard deviation
of 0.5 hours.

1. Set up the null and alternative hypotheses.
2. Compute the test statistic.
3. State the p-value for the test. Also, state the decision and conclusion of the test in context.

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