Question: The Carolina Tobacco Company advertised that its best selling nonfiltered cigarettes contain at most 40 mg. Of nicotine, but Consumer Advocate magazine ran tests of 10 randomly selected cigarettes and found amounts (in mg) shown in the accompanying list. It’s a serious matter to charge that the company advertising is wrong, so use a significance level of alpha = 0.01 to test the claim that the mean nicotine content is greater than 40 mg. After testing the claim, comment on the test data and whether anything different should have been done.

47.3 39.3 40.3 38.3 46.3 43.3 42.3 49.3 40.3 46.3