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3/3 Points] DETAILS PREVIOUS ANSWERS MY NOTES ASK YOUR TEACHER For the given scenario, use the drop downs to choose the appropriate test (1 - 5), test statistic (z or t), and the number of degrees of freedom. Choose 0 for the degrees of freedom if degrees of freedom does not apply. The possible tests are: 1. 1 sample population proportion 2. 2 sample difference between two population proportions 3. 1 sample population mean 4. 2 sample difference between two population means, independent samples 5. mean of differences, matched pairs Among randomly selected pets, 27% of the 188 dogs and 18% of the 163 cats had eas. Does this indicate a signicant difference in rates of flea problems for these two pets? The appropriate test is 5 v X ; with test statistic \" x and df = - X 9. [-l3 Points] Your last submission is used for your score. ASK YOUR TEACHER freedom if degrees of freedom does not apply. The possible tests are: 1. 1 sample population proportion 2. 2 sample difference between two population proportions 3. 1 sample population mean 4. 2 sample difference between two population means, independent samples 5. mean of differences, matched pairs ~-Select-- v complete room additions in less than the contract times? The appropriate test is For the given scenario, use the drop downs to choose the appropriate test (1 - 5), test statistic (z or t), and the number of degrees of freedom. Choose 0 for the degrees of The owner of a construction company would like to know if his current work teams can build room additions quicker than the time allotted for by the contract. A random sample of 12 room additions completed recently revealed an average completion time of 0.32 days (with s = 0.2 days) faster than contracted. Is this strong evidence that the teams can ; with test statistic ~-Select-- v and df = ---Select-- V . l Submit Answer I I 14. [-I3 Points] | ;v ' For the given scenario, use the drop downs to choose the appropriate test (1 - 5), test statistic (z or t), and the number of degrees of freedom. Choose 0 for the degrees of freedom if degrees of freedom does not apply. The possible tests are: 1 sample population proportion 2 sample difference between two population proportions 1 sample population mean 2 sample difference between two population means, independent samples mean of differences, matched pairs 9:59P!" A farmer would like to know if a new fertilizer increases his crop yield. In an effort to decide this, the farmer recorded the yield for 14 different elds prior to adding fertilizer and after adding the fertilizer. The farmer assumes the crop yields are approximately normal. Does the fertilizer work as advertised? The appropriate test is ---Select- v ; with test statistic ---Select- v and df = -Select-- v . Submit
