| Testing Population Mean with known Variance | ||
| Population variance | 0.36 | |
| Sample size | 63 | |
| Sample mean | 20 | |
| Confidence interval | 0.99 | |
| Type of Interval | Left tail | Right tail |
| Two-sided confidence interval at 0.99 | 19.8052856069445 | 20.1947143930555 |
| Left one-sided confidence interval at 0.99 | 19.8241446303504 | +inf |
| Right one-sided confidence interval at 0.99 | -inf | 20.1758553696496 |
| more information about confidence interval | ||