May I have help with these questions, please?

1. 26. The NYPD needs to conduct a study on the average amount of tickets written each day to see if it is increasing from 2,500. A civilian in charge of the study ordered a Z test to be conducted using a sample of 20 recent days which revealed an average 2,600 and a standard deviation of 4. Why do you think this civilian was promptly fired? Note: Computations are not necessary to solve.
2. 

27. The Mayor of New York states that a patient with a non-life threatening injury who visits an emergency room for treatment can expect to wait an average of 270 minutes to be diagnosed if that patient arrives during prime time. Fox News Undercover received numerous reports indicating that the average wait time was actually much higher and ran an investigation. Nine randomly chosen patient visits investigated by Fox revealed the following wait times. Does Fox News Undercover have a case against the mayor that the average wait time really is higher or was their evidence just a uke? Use traditional testing. You may use alpha = .05 307 331 366 305 346 270 283 340 240 Part A: Solve for i (1 point) Part B: Solve for s: (8 points) Part C: State ho and hl: (2 points) Part D: Solve for Critical Value from T curve: (2 points) Part E: Calculate 1 = X - M (6 points) s/vn Part F: Apply Decision Rule to determine if ho should be accepted or rejected (2 points) Part G: Summary Statement (5 points)