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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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.