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Practice Final Exam - Answers

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Dalhousie University COMM 2501 LieutenantHackerQuetzal2756 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 100000824368823 from CourseHero.com on 11-19-2022 00:17:55 GMT -06:00 https://www.coursehero.com/file/15266451/Practice-Final-Exam-Answers/ 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 1.36872 25 4 9.7 1.7109( 9.7 4 25 1.7109 1 25 1, / 2 24, 0.0250                 X n S X t X S n t t t n  b. Set up a 95% confidence interval estimate of the population proportion of clerical workers absent more than 10 days last year. [Show More]

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