IVE W Y MATHEMATICAL ASSOCIATION OF AMERICA

webwork / mathl 70falQ1 berryhill / chapter_B / 12 Chapter 8: Problem 12 Previous Problem Problem List Next Problem (1 point) The nicotine content in cigarettes of a certain brand is normally distributed with mean (In milligrams) and standard deviation = 0.1. The brand advertises that the mean nicotine content of their cigarettes Is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually hlgtw than advertised. He takes measurements from a SRS of 15 cigarettes of this brand. The sample yields an average of 1.6 mg of nicotine. Conduct a test using a significance level of a = 0.05. (a) The test statistic (b) The critical value, = (c) lhe final conclusion is (Hint: The critical value should be one of the following values: -2.33, -1.645, 1.645, 2.33) OA The nicotine content is probably higher than advertised. O B. There is not sufficient evidence to show that the ad is misleading. Note: You can eam partial credit on this problem.