Question: Secondhand Smoke in Different Groups Refer to Data Set 6 in Appendix B. Use a 0.05 significance level to test the claim that the mean

Secondhand Smoke in Different Groups Refer to Data Set 6 in Appendix B. Use a 0.05 significance level to test the claim that the mean cotinine level is different for these three groups: nonsmokers who are not exposed to environmental tobacco smoke, nonsmokers who are exposed to tobacco smoke, and people who smoke. What do the results suggest about secondhand smoke?

11-2 Beyond the Basics

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