If you take this sample and break into 2 samples, one forgraduate degrees (MBA and MSE) and one for undergraduate degrees(BA and BSE), would you believe the populations have differentGPAs?
3.56 | MBA | 3.51 | BA |
3.75 | MBA | 2.85 | BA |
3.2 | MBA | 2.94 | BA |
3.2 | MBA | 3.25 | BA |
3.87 | MSE | 2.65 | BSE |
3.2 | MSE | 3.47 | BSE |
                                             3.46 | Mean (Grad) |                  3.11 | Mean (Undergrad) |
                             0.28 | std dev. |               0.32 | std dev. |
- What test would you perform?
- Z-test of a mean
- T-test of a mean
- T-test of 2 sample means
- Chi-square test
- What is the value of the test statistic?
- 2.02
- 2.68
- 3.06
- 3.11
- What is the p-value?
- 0.0074
- 0.0280
- 0.0373
- 0.0746
- Based on a significance level of 0.05, would you reject or failto reject and why?
- Reject because p < alpha
- Reject because p > alpha
- Fail to reject because p < alpha
- Fail to reject because p > alpha
