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 10 smokers and found that the mean number of cigarettes they smoked per day was 28. The sample standard deviation was 2.7. At a = 0.05, is there enough evidence to support her claim? Assume that the EO population is approximately normally distributed. Use the critical value method and tables. Part: 0 / 5 Part 1 of 5 olo (a) State the hypotheses and identify the claim. Ho (Choose one) H1: (Choose one) This hypothesis test is a (Choose one) V test