Cigarette Smoking A researcher found that a cigarette smoker smokes on average 31 cigarettes a day. She feels that this average is too high. She selected a random sample of 12 smokers and found that the mean number of cigarettes they smoked day was 29. The sample standard deviation was 2.7. At a = 0.01, is there enough evidence to support her claim? Assume that t population is approximately normally distributed. Use the critical value method and tables. Part 1 of 5 (a) State the hypotheses and identify the claim. Ho (Choose one) H1: (Choose one) V 0=0 0+0 This hypothesis test is a two-tailed test. X h Part 2 of 5 (b) Find the critical value(s). Round the answer to three decimal places. If there is more than one critical value, seperate them with commas. Critical value(s): | 2.7180 Submit Assignment