2.Please answer the questions below.

2. (15 points) The mean annual expenditure per 25- to 34-year-old consumers for health care is $1468 with a standard deviation of$ 198. Students at a large university took a survey and it was found that for a sample of 64 students, the mean health care expense was $1520. Is there sufcient evidence at a = .01 to conclude that their health care expenditure differs from the national average of $ 1468? State He: State H1: Is this a One- or two-tail test? Why? Do you compute a z-statistic or tstatistic and why? What is the critical value? What is the decision rule? Calculate the statistic: sesame H. What is your decision regarding Ho and why? Interpretation of the results: l-II