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Name: A scientist wants to know that is there an association between the age
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Description: A scientist wants to know that is there an association between the age group (Young, Adult and elderly) and the level of complaint (Serious, Moderate and Light). Use Chi-squared hypothesis test for association to test that there is an association bet

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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A scientist wants to know that is there an association between the age group (Young, Adult and elderly) and the level of complaint (Serious, Moderate and Light). Use Chi-squared hypothesis test for association to test that there is an association between the age group and the level of complaint with one percent level of significance.

The scientist use MS excel and found that the Chi test stat is 12.875.

Critical value:

At 1% = 13.277

At 5% = 9.488

At 10% = 7.779

1. Conclusion and decision

2. State the decision rule

3. State the null and the alternative hypothesis

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