Good day statistical methods experts I would like some detail analysis and break down of the following exercise

Please to provide a solution to parts D & F only

Thank You

Question 1 The average hourly earnings of police in the St. Catherine South Division constituency in 1997 was US$34.79. As part of a study, the police commission collects information for 15 of their 2018 constables. They believe that their constables are now able to command a higher hourly rate. Information for the 15 constables is presented below. 21.63 39.90 15.38 43.51 52.83 23.15 29.49 51.61 25.48 5.49 41.38 16.83 20.67 31.25 8.65 Normal Q-Q Plot of Average Hourly Earnings Expected Normal Value Observed Value a) Construct a 90% confidence interval for the population average hourly earnings for the 2018 constables in the St. Catherine South Division. b) Construct a 95% confidence interval for the population average hourly earnings for the 2018 constables in the St. Catherine South Division. c) What is the margin of error for the confidence interval obtained in a)? d) Use the confidence interval you created in a) to test whether the average hourly earnings for the 2018 constables of the St. Catherine South Division has changed from what obtained in 1992. e) Using the appropriate inferential method, determine if the Police Commission is justified in its belief. f) Based on the necessary assumptions, was the inferential method you used appropriate? Give reasons for your