Answered: Dormitory Year A B C D Freshman 7 8 6 9…

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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Random samples of two freshmen, two sophomores, two juniors, and two seniors each from four dormitories were asked to rate, on a scale of 1 (poor) to 10 (excellent), the quality of the dormitory environment for studying. The results are shown in the attached table:

a. Set up the analysis of variance table.
b. Test the null hypothesis that the population mean ratings are the same for the four dormitories.
c. Test the null hypothesis that the population mean ratings are the same for the four student years.
d. Test the null hypothesis of no interaction between student year and dormitory rating.

Dormitory
Year
A
B
C
D
Freshman
7
8
6
9
Sophomore
8.
8.
Junior
4
6.
7
7
Senior
4
6
8
5
6.
7
976N
657

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