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Question: 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 fulltime, while most of Company A's were part-time.
Not only that, says Company B, but a higher percentage of its fulltime 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.
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
Excel or Minitab users: The data set is available in file named JobSalary. All data sets can be found in your eBook or on your Student CD. Use = .05 to test for a significant difference among the mean annual salaries for the three job fields.
suppose the people living in a city have a mean score of 47 and a standard of 3 on a measure if concern about the
The percentage of people with advanced degrees is 16.5% on average if 1000 people are randomly selected what is the probability that the percentage of these poeple with advanced degrees is between 17% and 18.5%?
A school newspaper reporter decides to randomly survey 12 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Find the probability that at most four students will attend
The number of items rejected daily by a manufacturer because of defect for the last 30 days are 22, 21, 8, 17, 25, 20, 18, 19, 14, 13, 11, 6, 21, 23, 4, 19, 11, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 9. Complete this frequency table for the..
Construct a 90% confidence interval on the difference in fraction nonconforming between the two processes."
A nuclear physicist studies the particles ejected by a beam of radioactive nuclei. According to a proposed theory, the average rates at which particles.
A random sample of 35 water drops was obtained, the amount of water in each (in ml) was measured, and the summary statistics were x‾ = 10.004 and s = 0.558. Is there any evidence to suggest the variance is larger than specified? Assume normality an..
Fertilization of bromeliads. Does the type of fertilization have a significant effect on leaf development for bromeliads? Researchers compared leaf production and death over a seven-month period for a control group (C), a group fertilized only wit..
Discuss whether Elite should grab the new ADC and run for the pot of gold or play it safe and wait for more proven technology and competitive sources.
What is the frequency range of visible photons (400 nm to 700 nm)? What is the energy range of visible photons (both i n J an d i n eV)?
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