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# Chi square test for association

See attached data file.

Excel (Hypothesis Testing 2)

In a survey for its advertisers, a newspaper chain randomly sampled 100 readers of each of its 3 major newspapers, with the results in the attached Excel file.

Social Class Newspaper 1 Newspaper 2 Newspaper 3
Poor 31 11 12
Lower Middle Class 49 59 51
Middle Class 18 26 31
Rich 2 4 6

The researchers are interested in determining whether there is an association between social class and type of newspaper.

A. State the null and alternative hypotheses
B. Use the appropriate statistical test to test your hypothesis

#### Solution Preview

Excel (Hypothesis Testing 2)

In a survey for its advertisers, a newspaper chain randomly sampled 100 readers of each of its 3 major newspapers, with the results in the attached excel file.
The researchers are interested in determining whether there is an association between social class and type of newspaper.

A. State the null and alternative hypotheses
The null hypothesis tested is
H0: There is no association between social class and type of newspaper.
The alternative hypothesis is
H1: There is an association between social class and type of newspaper.

B. ...

#### Solution Summary

The solution provides step by step method for the calculation of chi square test for association. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.

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