| Testing Mean with known Variance | |
| sample size | 320 |
| population variance | 0.6 |
| sample mean | 0.48 |
| null hypothesis about mean | 0.42 |
| type I error | 0.05 |
| Z-value | 1.38564064605510 |
| p-value (one-tailed) | 0.082928330171455 |
| p-value (two-tailed) | 0.16585666034291 |
| conclusion for one-tailed test | |
| Do not reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Do not reject the null hypothesis | |