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(Solved by Expert Tutors) This is an excel project that was just assigned, but I have only one


day to complete. Thank youScenario:When nicotine is absorbed by the body, cotinine is produced. Data Set 5, which is attached, provides you with information about the levels of cotinine found in the blood of smokers (SMKR), non-smokers exposed to secondhand smoke at home or work (ETS), and non-smokers not environmentally exposed to secondhand smoke (NOETS).You have a friend who is a smoker and smokes inside the house also inhabited by a non-smoking spouse and non-smoking children. Your friend believes that concerns about being exposed to smoke are exaggerated and that the real danger comes from actually smoking.Researchers use the value of 10 ng/mL of serum cotinine as the cutoff to distinguish smokers from non-smokers. In other words, if a person has serum cotinine levels of 10 or higher, he/she is considered to be a smoker. The higher the level, the heavier the smoker.Activity:Follow the steps on pages 443 or 453, use a 95% confidence level to test the claim that the serum cotinine levels of non-smokers who are exposed to secondhand smoke (ETS) have a mean that is less than or equal to 10 ng/mL (signifying a non-smoker).a. Explain why you chose the procedure on page 443 or page 453 to conduct your test.b. For this test, write the null and alternate hypotheses, in symbolic form.c. What was your conclusion and what does it tell you?d. Do you think this information would be useful in convincing your friend not to smoke in the home? Why or why not?e. Given the potential health implications of cotinine levels in non-smokers who are exposed to secondhand smoke, do you think a 95% level of confidence was appropriate for your test? Why or why not? f. Can you think of any limitations of these findings?

 


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