Cigarette SmokingA researcher found that a cigarette smoker smokes on average30

cigarettes a day. She feels that this average is too low. She selected a random sample of11 smokers and found that the mean number of cigarettes they smoked per day was31. The sample standard deviation was2.6.At = 0.10,is there enough evidence to support her claim? Assume that the population is approximately normally distributed. Use the critical value method and tables.

a) State the hypothesis and identify the claim

b) Find the critical values(s)

c) Compute the test value

d) Make the decision

e) Summarize the result