Answered: Consumer Reports has conducted a survey…

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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Question

Consumer Reports has conducted a survey to see if there is an association between experiencing issues on vehicles and the origin of the vehicle manufacture. The survey asked consumers about the problems they had with their vehicle during the previous 12 months. The origin of the vehicle manufacturer was classified as Asia, Europe or USA. Below shown information is from 100 vehicles/consumers from each manufacture: Asia, Europe or USA.

Any Issues	Origin of the Manufacturer	Total
Asia	Europe	USA
Yes	12	21	17	50
No	88	79	83	250
Total	100	100	100	300

In this study
- what is the response variable?
- what is the explanatory/predictor variable?
Write the null and alternative hypotheses to test if there is an association between the origin of the vehicle manufacture and potential issues.
What is the degrees of freedom for the test?

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