Listed below are amounts of carbon monoxide (mg per cigarette) in samples of king size cigarettes, 100 mm menthol cigarettes, and 100 mm nonmenthol cigarettes (from Data Set 4 in Appendix B). The king size cigarettes are nonfiltered, nonmenthol, and non-light. The 100 mm menthol cigarettes are filtered and non-light. The 100 mm non-menthol cigarettes are filtered and non-light. Use
Chapter 12, Review Exercises #6
Listed below are amounts of carbon monoxide (mg per cigarette) in samples of king size cigarettes, 100 mm menthol cigarettes, and 100 mm nonmenthol cigarettes (from Data Set 4 in Appendix B). The king size cigarettes are nonfiltered, nonmenthol, and non-light. The 100 mm menthol cigarettes are filtered and non-light. The 100 mm non-menthol cigarettes are filtered and non-light. Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of carbon monoxide. Given that only the king size cigarettes are not filtered, do the filters appear to make a difference?
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