Answered: In their 2003 and 2008 studies on how…

Name: In their 2003 and 2008 studies on how long wireless customers have to
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Description: In their 2003 and 2008 studies on how long wireless customers have to spend on hold before speaking with a customer service representative, J.D. Power and Associates found the mean times to be 3.3 minutes and 4.4 minutes, respectively. Assume that th

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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In their 2003 and 2008 studies on how long wireless customers have to spend on hold before speaking with a customer service representative, J.D. Power and Associates found the mean times to be 3.3 minutes and 4.4 minutes, respectively. Assume that the data below shows in minutes, for times on hold during the 2003 and 2008 studies. Use a one-tail test and the 0.05 level of significance in concluding whether the population mean time for 2008 could be greater than that for 2003. Determine and interpret the p-value for the test.

2008_mins	2003_mins
3.5	5.7
7.2	3.3
1.7	1.8
4.1	3.2
5.5	3.4
5.6	2.4
3.2	3.3
6.1	4.6
6.7	3.4
3.0	3.3
2.5	3.3
6.6	2.3
1.2	3.2
2.2	4.7
2.4	2.5
1.5	1.6
5.5	3.5
3.4	2.5
4.5	5.6
6.6	1.4

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