Answered: The ANOVA test performed for determined…

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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The ANOVA test performed for determined that not all mean commute times across the four cities are equal. However, it did not indicate which means differed. To find out which population means differ requires further analysis of the direction and the statistical significance of the difference between paired population means. Fisher 95% confidence intervals are shown below.

	Lower	Upper
Fisher’s 95% confidence intervals	Houston – Charlotte	17.92	57.08
Houston – Tucson	29.75	68.91
Houston – Akron	43.75	82.91
Charlotte – Tucson	–7.75	31.41
Charlotte – Akron	6.25	45.41
Tucson - Akron	–5.58	33.58

Which of the following is the tα/2,nT−ctα/2,nT⁢− c value used to calculate the Fisher’s 95% confidence intervals?

A. 1.725

B. 2.086

C. 2.080

D. 2.090

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