| Testing Sample Mean with known Variance | ||
| Population variance | 13 | |
| Sample size | 60 | |
| Null hypothesis (H0) | 20.377 | |
| Confidence interval | 0.95 | |
| Type of Interval | Left tail | Right tail |
| Two-sided confidence interval at 0.95 | 19.464686414758 | 21.289313585242 |
| Left one-sided confidence interval at 0.95 | 19.6113623038795 | +inf |
| Right one-sided confidence interval at 0.95 | -inf | 21.1426376961205 |
| more information about confidence interval | ||