Chapter 12.1, Problem 16BSC

In Exercises 15 and 16, use the data set in Appendix B.

16. Secondhand Smoke Refer to Data Set 12 “Passive and Active Smoke” in Appendix B and use the measured serum cotinine levels (in mg/mL) from the three groups of subjects (smokers, nonsmokers exposed to tobacco smoke, and nonsmokers not exposed to tobacco smoke). When nicotine is absorbed by the body, cotinine is produced. Use a 0.05 significance level to test the claim that the three samples are from populations with the same mean. What do the results suggest about the effects of secondhand smoke?