Exam_3_Practice_Problems Fa2016(1)

Exam_3_Practice_Problems Fa2016(1) - WCOB 1033 Exam 3...

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WCOB 1033 Exam 3 Practice Problems Use the following scenario for the next 2 questions. One of the most challenging problems for Stower’s Burger Barn, a fast food restaurant chain, is attracting and retaining workers for its stores. Typically, people do not stay long in these jobs because there is little room for advancement and the pay is low. In fact, the turnover rate is generally about 100% a year, meaning that the percentage of people who stay on the job for an entire year is basically 0. Corporate vice president Mr. P. Holman had the idea that if they hired retired people that they would likely stay on the job longer than the teenagers they usually hired, because they were not looking for high pay and advancement, just a little extra income. He decided to test this theory by examining all the application records of the people that had been hired at their stores during the past year. Specifically, he compared 200 workers who were high school students at the time they began work with 200 formerly retired workers over the age of 65. For each case he recorded whether they had quit (coded as 1) or not (coded as 0) over the course of the year. His data were arranged in an Excel file as illustrated below: H.S. Retired 1 1 0 1 1 1 0 1 1 0 0 0 1 0 1 1 0 0 1 1 1 1 1 0 . . . . . . . . 1. Which of the following are the correct hypotheses for Mr. Holman’s theory? a. Ho: μ D ≤ 0; H A : μ D > 0 (Where D = H.S. – retired) b. Ho: μ H.S – μ retired ≤ 0: H A : Ho: μ H.S. – μ retired > 0 c. Ho: p H.S . – p retired = 0; H A: p H.S . – p retired = 0 d. Ho: p H.S . – p retired ≤ 0; H A : p H.S . – p retired > 0 1
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2. Based on the following sets of output, neither of which may be correct, which is the correct decision? 2
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Use the following scenario for the next 5 questions: FeathersInc, a large processor of chicken products, has production facilities throughout the United States. For years, employees of FeathersInc have complained that their suggestions for improvements in chicken processing have been ignored by upper management. In an attempt to empower employees, FeathersInc management at the Northeast production facility decided to initiate a number of empowerment-oriented policies to respond to employee suggestions. For example, a mailbox was placed in a central location, and employees were encouraged to drop suggestions into this box. No such initiatives were taken at the other production facilities. There was a great deal of employee enthusiasm at the Northeast plant after the new policies were implemented, but management wanted to know whether the effects were lasting. To investigate this question, 50 randomly selected employees at the Northeast plant and 50 randomly selected employees from other plants were asked to complete a survey one year after the implementation of the new policies at the Northeast plant. This survey contained the following question: “Management at this plant is generally responsive to employee suggestions.”
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