LivePerson, a cloud-based messaging company that provides customer service messaging software to companies and which surveyed 2,000 U.S.-based consumers online in January 2017. The table below presents the results of the survey. should be concerned for their jobs I’m concerned Others for my job Yes No 546 19 Yes No 1365 187 6. What percentage of survey participants are concerned for their job? 97% b) 29% c) 27% d) 90% e) 64% 7. What percentage of survey participants think others should be concerned for their jobs? 97% b) 29% c) 27% d) 90% e) 64% 8. What percentage of survey participants think their own jobs are safe, but others should be worried? 97% b) 29% c) 27% d) 90% e) 64% 9. We should to analyze this data because we are comparing proportion of yes answers: use McNemar’s Test on two questions, asked of two separate groups of people. on one question, asked of two separate groups of people. on two questions, asked of the same group of people. on two questions, asked of related groups of people. None of the above 10. The alternative hypothesis states that there is a difference in the proportion of Americans: who are concerned about their jobs, and those who think others should be concerned. who are not concerned about their own jobs but think others should be and those who are concerned about their own jobs but think others should not be. who are concerned about their own jobs and those who are not. who think others should be concerned about their jobs and those who do not think so. all of the above 11. Compute the Test Statistic for Test. McNemar’s 13.25 22.17 29.90 36.18 9.64 12. The p-value for this test would be: a) close to 0 b) close to 1 c) close to 0.50 d) close to 0.05 e) close to 0.25 13. Are there any problems with the assumptions necessary for Test? McNemar’s We to make any assumptions for this test. don’t need All of the assumptions for this test seem to be satisfied. We are not sure if the sample is representative of the population of interest. Some of the cells in the table have less than thirty responses. The answers in the population do not appear to follow a Normal distribution.
LivePerson, a cloud-based messaging company that provides customer service messaging software to companies and which surveyed 2,000 U.S.-based consumers online in January 2017. The table below presents the results of the survey. I’m concerned Others should be concerned for their jobs for my job Yes No Yes 546 19 No 1365 187 6. What percentage of survey participants are concerned for their job? 97% b) 29% c) 27% d) 90% e) 64% 7. What percentage of survey participants think others should be concerned for their jobs? 97% b) 29% c) 27% d) 90% e) 64% 8. What percentage of survey participants think their own jobs are safe, but others should be worried? 97% b) 29% c) 27% d) 90% e) 64% 9. We should use McNemar’s Test to analyze this data because we are comparing proportion of yes answers: on two questions, asked of two separate groups of people. on one question, asked of two separate groups of people. on two questions, asked of the same group of people. on two questions, asked of related groups of people. None of the above 10. The alternative hypothesis states that there is a difference in the proportion of Americans: who are concerned about their jobs, and those who think others should be concerned. who are not concerned about their own jobs but think others should be and those who are concerned about their own jobs but think others should not be. who are concerned about their own jobs and those who are not. who think others should be concerned about their jobs and those who do not think so. all of the above 11. Compute the Test Statistic for McNemar’s Test. 13.25 22.17 29.90 36.18 9.64 12. The p-value for this test would be: a) close to 0 b) close to 1 c) close to 0.50 d) close to 0.05 e) close to 0.25 13. Are there any problems with the assumptions necessary for McNemar’s Test? We don’t need to make any assumptions for this test. All of the assumptions for this test seem to be satisfied. We are not sure if the sample is representative of the population of interest. Some of the cells in the table have less than thirty responses. The answers in the population do not appear to follow a Normal distribution.
ex3_2023_sp17.docx