A committe that is stufying employer-employee relations proposed that each employee would rate his or her immediate supervisor, and in turn the supervisor would rate each employee. To find reactions regarding the proposal, 120 office personnel and 160 plant personnel were selected at random. 78 of the office personnel and 90 of the of the plant personnel were in favor of the proposal. We test the hypothesis that if the two population proportions are equal with a 0.05 significance level. What is our conclusion? What is the p- value of this hypothesis testing? Construct the correspponding 95% confidence interval for the difference of two proportions

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A: We want to find the test statistic

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A: Solution: Given information: k= 4  Categories  n= 80+129+209+118 = 536  total observation   α=0.05…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance​…

A: The null an alternative hypothesis is obtained below: H0: The proportions of agree responses are the…

Q: In the US, 43.5% of all people have type O blood, 39.7 % have type A blood, 11.9% have type B blood…

A: Outcomes Frequency O1271A1123B328AB158Total2880

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance​…

A: The given table is as follows:

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A:

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A: a. The expected frequencies are, Outcome Frequency Proportion Expected frequency O 1317 0.448…

Q: In the US, 43.5% of all people have type O blood, 39.7% have type A blood, 11.9% have type B blood…

A: Outcomes Frequency O1271A1123B328AB158Total2880

Q: student decides to spin a dime and determine the proportion of times it lands on heads. The student…

A: We have given that  Sample size n = 25 Favorable cases x =17 Population proportion p =0.5

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A:

Q: In the US, 45.4% of all people have type O blood, 39.5% have type A blood, 11.8% have type B blood…

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A:

Q: The table below summarizes data from a survey of a sample of women. Using a 0.01 significance level,…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks The following…

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance​…

A: Chi square test of indepence.

Q: The table below summarizes data from a survey of a sample of women. Using a 0.05 significance level,…

A: Null and Alternative Hypotheses:   Null hypothesis:   H0: The response of the subject and gender of…

Q: In the US, 45.4% of all people have type O blood, 39% have type A blood, 11.9% have type B blood and…

A:

Q: . Researchers are investigating whether high-risk patients have strokes or not depending on which of…

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Q: According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34…

A: The level of significance is 0.01 (=1%).

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A:

Q: who live within 20 miles of the coast in high hurricane risk counties of eight southern states. In…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.