Commerce 2501 Practice Final Exam - ANSWERS|ALL YOU NEED

Commerce 2501 Practice Final Exam - ANSWERS Name:_________________________ Student Number:________________ Section (Colour):_________________ Time: 3 Hours Closed Book. You may use two sheets of formulas. Be sure to show how you obtained your answers. You will lose points if the logic is not clear. Question Mark 1 2 3 4 5 Total This study source was downloaded by from CourseH on :58:14 GMT -06:00 Problem 1 (20 marks). The personnel director of a large corporation wishes to study absenteeism among clerical workers at the corporation’s central office during the year. A random sample of 25 clerical workers reveals the following:  Absenteeism : X 9.7 days,sample standard deviation 4.0 days  12 clerical workers were absent more than 10 days. a. Set up a 95% confidence interval estimate of the mean number of absences for clerical workers last year. Answer 8.33128 11.06872 9.7 1.36872 11.06872 9.7 1.36872 8.33128 ) 9.7 1.7109(0.8) 9.7 1.