| Testing Mean with known Variance | |
| sample size | 63 |
| population variance | 0.2 |
| sample mean | 5.35 |
| null hypothesis about mean | 5.2 |
| type I error | 0.05 |
| Z-value | 2.66223590239482 |
| p-value (one-tailed) | 0.0038811728032786 |
| p-value (two-tailed) | 0.0077623456065572 |
| conclusion for one-tailed test | |
| Reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Reject the null hypothesis | |