State the null and alternative hypothesis. Find the degrees of freedom for the contingency table . Find the critical value of chi-square from Appendix E or from Excel’s function . Calculate the chi-square test statistics at 0.005 level of significance. Interpret the p -value. Check whether the conclusion is sensitive to the level of significance chosen, identify the cells that contribute to the chi-square test statistic and check for the small expected frequencies.

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Chapter 15, Problem 28CE

To determine

State the null and alternative hypothesis.

Find the degrees of freedom for the contingency table.

Find the critical value of chi-square from Appendix E or from Excel’s function.

Calculate the chi-square test statistics at 0.005 level of significance.

Interpret the p-value.

Check whether the conclusion is sensitive to the level of significance chosen, identify the cells that contribute to the chi-square test statistic and check for the small expected frequencies.

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