Answered: The Wall street journal Corporate…

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 Wall street journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good and fair categorical scale. Assume the sample data for 200 respondents below applies to this study.

Reputation of Company

Quality of Management	Excellent	Good	Fair
Excellent	40	25	5
Good	3S	35	10
Fair	25	10	15

a Use .05 level of significance and test for independence of the quality of management and the reputation of the company. What is the p-value and what is your conclusion?

b. If there is dependence or association between two ratings, discuss and use probabilities to justify your answer.

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