| Hypothesis Test about the Mean - Confidence Interval | |
| Sample size | 160 |
| Sample standard deviation | 4.45804604376198 |
| Confidence | 0.95 |
| Null hypothesis | 20 |
| Sample Mean | 18.50625 |
| 2-sided Confidence Interval | [ 17.8101833512934 , 19.2023166487066 ] |
| Left-sided Confidence Interval | [ 17.9231411614926 , +inf ] |
| Right-sided Confidence Interval | [ -inf, 19.0893588385074 ] |