Question: To test the hypothesis that the mean number of cigarettes smoked by smoking adults is 18.1, a sample of 40 adults is taken, yielding a sample mean of 16.8 cigs with a standard deviation of 4.7 cigs. Is there evidence at the 0.1 level to reject the hypothesis that the mean number of cigs smoked is 18.1? (Use a 2-sided alternative hyp)