| Hypothesis Test about the Mean - Confidence Interval | |
| Sample size | 441 |
| Sample standard deviation | 3.68685900095587 |
| Confidence | 0.95 |
| Null hypothesis | 20 |
| Sample Mean | 21.1587301587302 |
| 2-sided Confidence Interval | [ 20.8136805152097 , 21.5037798022506 ] |
| Left-sided Confidence Interval | [ 20.8693426114531 , +inf ] |
| Right-sided Confidence Interval | [ -inf, 21.4481177060072 ] |