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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Answer 1

Question

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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Answer 2

Question

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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Answer 3

Question

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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Answer 4

Question

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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Answer 5

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.

Answer 6

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.

Answer 7

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.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Instructions: For each exercise, include software...Ch. 15.1 - Prob. 5SE Ch. 15.2 - U.S. market share for smartphones with larger...Ch. 15.2 - Prob. 7SE Ch. 15.3 - Prob. 8SE Ch. 15.3 - Prob. 9SE Ch. 15.3 - In a three-digit lottery, each of the three digits...

Solution Summary: The author states the null hypothesis and the alternative hypothesis. The first and third rows contribute the most to the chi-square test statistic.

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