Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 46E
Be a Simpson Can you design a Simpson’s paradox? Two companies are vying for a city’s “Best Local Employer” award, to be given to the company most committed to hiring local residents. Although both employers hired 300 new people in the past year, Company A brags that it deserves the award because 70% of its new jobs went to local residents, compared to only 60% for Company B. Company B concedes that those percentages are correct, but points out that most of its new jobs were full-time, while most of Company A’s were part-time. Not only that, says Company B, but a higher percentage of its full-time jobs went to local residents than did Company A’s, and the same was true for part-time jobs. Thus, Company B argues, it’s a better local employer than Company A.
Show how it’s possible for Company B to fill a higher percentage of both full-time and part-time jobs with local residents, even though Company A hired more local residents overall.
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Be a Simpson Can you design a Simpson’s paradox? Twocompanies are vying for a city’s “Best Local Employer”award, to be given to the company most committed tohiring local residents. Although both employers hired300 new people in the past year, Company A brags that itdeserves the award because 70% of its new jobs went tolocal residents, compared to only 60% for Company B.Company B concedes that those percentages are correct,
but points out that most of its new jobs were full-time,while most of Company A’s were part-time. Not only that,says Company B, but a higher percentage of its full-timejobs went to local residents than did Company A’s, andthe same was true for part-time jobs. Thus, Company Bargues, it’s a better local employer than Company A.Show how it’s possible for Company B to fill a higherpercentage of both full-time and part-time jobs with local
residents, even though Company A hired more local resi-dents overall.
The percentage of employees who cease their employment during a year is referred to as employee turnover, and it is a serious issue for businesses. The following table shows the cost, in millions of dollars, to a certain company for a given employee turnover percentage in a year.
Which of the following is a research hypothesis?
A. Liberals and conservatives have the same voting rates.
B. The rates of that senior citizens receive moving violations are not different from rates of moving violations seen in teenagers.
C. White and African Americans watch the same amount of TV.
D. Men and women have different levels of income.
Chapter 2 Solutions
Intro Stats
Ch. 2.2 - A statistics class reports the following data on...Ch. 2.2 - A statistics class reports the following data on...Ch. 2.2 - A statistics class reports the following data on...Ch. 2.2 - Prob. 4JCCh. 2.2 - Prob. 5JCCh. 2.2 - A statistics class reports the following data on...Ch. 2.2 - Prob. 7JCCh. 2 - Prob. 1ECh. 2 - Prob. 2ECh. 2 - Prob. 3E
Ch. 2 - Marriage in decline Changing attitudes about...Ch. 2 - 5. Movies again The following table summarizes 348...Ch. 2 - Prob. 6ECh. 2 - Prob. 11ECh. 2 - 12. Movie ratings The pie chart shows the ratings...Ch. 2 - Prob. 13ECh. 2 - Prob. 14ECh. 2 - Prob. 15ECh. 2 - Prob. 16ECh. 2 - Prob. 17ECh. 2 - Prob. 18ECh. 2 - Prob. 19ECh. 2 - Prob. 20ECh. 2 - Prob. 21ECh. 2 - Modalities A survey of athletic trainers asked...Ch. 2 - Prob. 23ECh. 2 - Prob. 24ECh. 2 - Prob. 25ECh. 2 - Prob. 26ECh. 2 - Prob. 27ECh. 2 - Politics Students in an Intro Stats course were...Ch. 2 - More about seniors Look again at the table of...Ch. 2 - Politics revisited Look again at the table of...Ch. 2 - Prob. 31ECh. 2 - More politics Look once more at the table...Ch. 2 - Prob. 33ECh. 2 - Parking lots A survey of autos parked in student...Ch. 2 - Weather forecasts Just how accurate are the...Ch. 2 - Prob. 36ECh. 2 - Blood pressure A company held a blood pressure...Ch. 2 - Prob. 38ECh. 2 - Prob. 39ECh. 2 - Antidepressants and bone fractures For a period of...Ch. 2 - Prob. 41ECh. 2 - Prob. 42ECh. 2 - Hospitals Most patients who undergo surgery make...Ch. 2 - Delivery service A company must decide which of...Ch. 2 - Graduate admissions A 1975 article in the magazine...Ch. 2 - Be a Simpson Can you design a Simpsons paradox?...
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