Answered: 12. Gaucher, Friesen, and Kay (2010)… | bartleby

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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12. Gaucher, Friesen, and Kay (2010) found that masculine-
themed words (such as competitive, independent,
analyze, strong) are commonly used in job recruit-
ment materials, especially for job advertisements in
male-dominated areas. In a similar study, a researcher
counted the number of masculine-themed words in job
advertisements for job areas, and obtained the follow-
ing data.

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$Hypothesis Tests and Confidence Intervals for Proportions$

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A Pew Research study conducted in 2017 found that approximately 75% of Americans believe that robots and computers might one day do many of the jobs currently done by people.† Suppose we have the following data collected from nurses, tax auditors, and fast-food workers in which a higher score means the person feels his or her job is more likely to be automated. Nurse TaxAuditor Fast-FoodWorker 3 4 5 4 5 8 6 4 6 2 4 8 3 6 5 3 3 6 4 5 6 5 3 4 (a) Use ? = 0.05 to test for differences in the belief that a person's job is likely to be automated for the three professions. State the null and alternative hypotheses. H0: μNurse = μTax auditor = μFast-food worker Ha: μNurse ≠ μTax auditor ≠ μFast-food worker H0: At least two of the population means are equal. Ha: At least two of the population means are different. H0: Not all the population means are equal. Ha: μNurse = μTax auditor = μFast-food worker H0: μNurse = μTax auditor = μFast-food worker Ha:…
A Pew Research study conducted in 2017 found that approximately 75% of Americans believe that robots and computers might one day do many of the jobs currently done by people.† Suppose we have the following data collected from nurses, tax auditors, and fast-food workers in which a higher score means the person feels his or her job is more likely to be automated. Nurse TaxAuditor Fast-FoodWorker 4 4 5 4 5 8 5 6 6 2 3 8 2 6 5 3 3 6 4 5 5 6 2 5 (a)Use ? = 0.05 to test for differences in the belief that a person's job is likely to be automated for the three professions. State the null and alternative hypotheses. 1. H0: μNurse = μTax auditor = μFast-food worker Ha: Not all the population means are equal. 2. H0: Not all the population means are equal. Ha: μNurse = μTax auditor = μFast-food worker 3. H0: At least two of the population means are equal. Ha: At least two of the population means are different. 4. H0: μNurse ≠ μTax auditor ≠ μFast-food worker…
Do well-rounded people get fewer colds? A study on the Chronicle of Higher Education was conducted by scientist at Carnegie Mellon University, the University of Pittsburgh and the University of Virginia. They found that people who have only a few social outlets get more colds than those who are involved in a variety of social activities. Suppose that of the 276 healthy men and women tested, n1=96 had only a few social outlets and n2=105 were busy with six or more activities. When these people were exposed to a cold virus, the following results were observed: Construct a 99% confidence interval for the difference in the two population proportions.

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