Now test the claim of a tobacco company spokesmen that people in the ETS population have "positive" levels of cotinine (significantly greater than zero), suggesting that this measure is not a good...

Now test the claim of a tobacco company spokesmen that people in the ETS population have "positive" levels of cotinine (significantly greater than zero), suggesting that this measure is not a good indicator of exposure to tobacco smoke. Use a significance level of 0.05. there are three variables, labeled Smokers, ETS, and No ETS. The dataset was collected for a study of second-hand smoke. The sample data consists of the measured serum cotinine levels in three different groups of people. •The NOETS group lists the cotinine levels for subjects who are nonsmokers and have no exposure to environmental tobacco smoke at home or work. •The ETS group lists cotinine levels for subjects who are nonsmokers exposed to tobacco smoke at home or work. •The SMOKERS group lists cotinine levels for subjects who report tobacco use. Serum cotinine is a metabolite of nicotine, meaning that cotinine is produced when nicotine is absorbed by the body. Higher levels of cotinine correspond to higher levels of exposure to smoke that contains nicotine.