Although the standard workweek is 40 hours a week, many people work a lot more than 40 hours a week. The following data give the number of hours worked last week by a random sample of 30 people. 42.8 43.7 58.7 53.8 42.4 50.1 47.5 45.3 50.6 45.0 45.6 54.1 55.0 43.7 52.7 56.3 48.5 50.1 52.7 47.2 58.8 51.4 49.1 43.9 45.8 45.9 50.6 42.7 49.9 43.7 i. Find and interpret the measures of central tendency for the data given. (9 marks) ii. Comment on the distribution of number of hours worked. Justify your answer based on Excel output. (6 marks) iii. Stating the method used, calculate the intervals that contain at least 75% of the data. (8 marks)