| Testing Mean with known Variance | |
| sample size | 9 |
| population variance | 0.36 |
| sample mean | 5.35 |
| null hypothesis about mean | 19 |
| type I error | 0.03 |
| critical value (one-tailed) | 18.6238412783697 |
| confidence interval (two-tailed) (sample mean) | [ 4.91598192448309 , 5.78401807551691 ] |
| conclusion for one-tailed test | |
| Reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Reject the null hypothesis | |