Stats: Modeling the World Nasta Edition Grades 9-12
Stats: Modeling the World Nasta Edition Grades 9-12
3rd Edition
ISBN: 9780131359581
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
Publisher: PEARSON
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Chapter 26, Problem 31E
To determine

To perform goodness of fit test.

Expert Solution & Answer
Check Mark

Answer to Problem 31E

There is sufficient evidence to reject the claim that area and party affiliation are independent.

Explanation of Solution

Given:

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 26, Problem 31E , additional homework tip  1

The null and alternative hypotheses:

  H0 : Area and party affiliation are independent.

  Ha : Area and party affiliation are not independent.

Using excel,

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 26, Problem 31E , additional homework tip  2

  χ2 = 13.85 and P-value = 0.0078

Decision: The p-value < 0.05, reject H0.

Conclusion: There is sufficient evidence to reject the claim that area and party affiliation are independent.

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