| Testing Mean with known Variance | |
| sample size | 90 |
| population variance | 0.36 |
| sample mean | 5.35 |
| null hypothesis about mean | 5.2 |
| type I error | 0.05 |
| Z-value | 2.37170824512628 |
| p-value (one-tailed) | 0.00885303290368356 |
| p-value (two-tailed) | 0.0177060658073671 |
| conclusion for one-tailed test | |
| Reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Reject the null hypothesis | |