Please answer the question below.

1. (25 points) A passenger railway has been carrying a mean of 12,000 passengers per day. The railway is reorganized and within the first year a random sample of 30 days shows a mean of 12,500 passengers a day and a standard deviation of 2000. Has the number of passengers carried per day increased, at the 0.01 level of significance? A. State H B. State H: c. Is this a one- or two-tail test? Why? D. Do you compute a z-statistic or t-statistic and why? E. What is(are) the critical value(s)? F. What is the decision rule? G. Calculate the statistic: H. What is your decision regarding H, and why? I. Interpretation of the results