Answered: Fowle Marketing Research, Inc. bases…

Name: Fowle Marketing Research, Inc. bases charges to a client on the assump
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Description: Fowle Marketing Research, Inc. bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. If a longer mean survey time is necessary, a premium rate is charged. A sample of 35 surveys prov

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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Fowle Marketing Research, Inc. bases charges to a client on the assumption that telephone surveys can be completed in a mean time of 15 minutes or less. If a longer mean survey time is necessary, a premium rate is charged. A sample of 35 surveys provided the survey times shown in the DATAfile named Fowle. Based upon past studies, the population standard deviation is assumed known with 4 minutes. Is the premium rate justified?
a. Formulate the null and alternative hypotheses for this application.
b. Compute the value of the test statistic.

(kindly, give me a solution on how to get the sample mean (bar x) thank you very much)

c. What is the p-value?

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