EP BUSINESS STATISTICS:FIRST COURSE-ACC
8th Edition
ISBN: 9780135179802
Author: Levine
Publisher: PEARSON CO
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A global study surveyed information security professionals regarding trends and issues affecting their profession and careers. In the study, women were asked about their impact on the security posture of their
organization. The study found that 24% of women indicated that their opinions are not valued When comparing women who did not feel valued and women who did feel valued, the most substantial difference
concerned training and leadership programs. The study also found that 48% of women that feel undervalued say their organization does not provide adequate training and leadership development resources
whereas 59% of women who do feel valued in their position indicate that their organization does provide adequate training and leadership development resources If a woman is selected at random and that
woman indicates that her organization does not provide adequate training and leadership development resources, what is the probability that this woman feels undervalued?
The probability is…
Suppose you are conducting a study about how the average US worker spends time over the course of a workday. You are interested in how much time workers spend per day on personal calls, emails, and social networking websites, as well as how much time they spend socializing with coworkers versus actually working.
The most recent census provides data for the entire population of US workers on variables such as travel time to work, time spent at work, and break time at work. The census, however, does not include data on the variables you are interested in, so you obtain a random sample of 102 full-time workers in the United States and ask about personal calls, emails, and so forth. You are curious about how your sample compares with the census, so you also ask the workers the same questions about work that are asked in the census.
Suppose the mean travel time to work from the most recent census is 24.1 minutes, with a standard deviation of 4.5 minutes. Your sample of 102 US workers…
Suppose you are conducting a study about how the average US worker spends time over the course of a workday. You are interested in how much time workers spend per day on personal calls, emails, and social networking websites, as well as how much time they spend socializing with coworkers versus actually working.
The most recent census provides data for the entire population of US workers on variables such as travel time to work, time spent at work, and break time at work. The census, however, does not include data on the variables you are interested in, so you obtain a random sample of 83 full-time workers in the United States and ask about personal calls, emails, and so forth. You are curious about how your sample compares with the census, so you also ask the workers the same questions about work that are asked in the census.
Suppose the mean time spent at work per day from the most recent census is 8.32 hours, with a standard deviation of 0.91 hours. Your sample of 83 US workers…
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- In 2010, the U.S. Congress passed the historic health care reform bill that will provide some type of coverage for the 32 million Americans currently without health care insurance. Just how widespread is the lack of medical coverage? The media claim that the segments of the population most at risk for disease and thus needing healthcare are women, children, the elderly and the poor. The following tables were generated from the U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplement (2011). The tables report the number of uninsured (in thousands) by sex, by age, and by household income Is being insured or not dependent on the income groups identified in the analysis? Fill in the degrees of freedom and p-value in the output below and draw a clear conclusion indicating which income-groups are more at risk of not being insured if there is a significant relationship.arrow_forwardThe 2016 Global Information Security Workforce Study(GISWS) surveyed information security professionals regarding trends and issues affecting their professions and careers. In the study, women were asked about their impact on the security posture of their organization. Twenty-eight percent of women indicated that their opinions are not valued. When comparing women who did not feel valued and women who did feel valued, the most substantial difference concerning training and leadership programs. Forty-seven percent of women that feel undervalued say their organization does not provide adequate training and leadership development resources, whereas 61% of women who do feel valued in their position indicate that their organizationdoes provide adequate training and leadership development resources.If a woman is selected at random and that woman indicates that her organization does not provide adequate training and leadership development resources, what is the probability that this woman…arrow_forwardIn the digital age of marketing, special care must be taken to make sure that programmatic ads appearing on websites align with a company's strategy, culture and ethics. For example, in 2017, Nordstrom, Amazon and Whole Foods each faced boycotts form social media users when automated ads for these companies showed up on the Breitbart website (ChiefMarketer.com). It is important for marketing professionals to understand a company's values and culture. The following data are from an experiment designed to investigate the perception of corporate ethical values among individuals specializing in marketing (higher scores indicate higher ethical values). Marketing Managers Marketing Research Advertising 3 6 7 4 6 6 3 5 5 5 5 6 4 6 6 5 5 6 (a) Use α = 0.05 to test for significant differences in perception among the three groups. State the null and alternative hypotheses. H0: μMM = μMR = μAHa: μMM ≠ μMR ≠ μAH0: Not all the population means are equal.Ha: μMM = μMR = μA…arrow_forward
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