| Testing Mean with known Variance | |
| sample size | 63 |
| population variance | 0.13 |
| sample mean | 21.1587301587302 |
| null hypothesis about mean | 20 |
| type I error | 0.35 |
| Z-value | 25.5082643602343 |
| p-value (one-tailed) | 0 |
| p-value (two-tailed) | 0 |
| conclusion for one-tailed test | |
| Reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Reject the null hypothesis | |