| Hypothesis Test about the Mean - Confidence Interval | |
| Sample size | 278 |
| Sample standard deviation | 5.11845122773262 |
| Confidence | 0.99 |
| Null hypothesis | 15 |
| Sample Mean | 19.9964028776978 |
| 2-sided Confidence Interval | [ 19.2001794404149 , 20.7926263149808 ] |
| Left-sided Confidence Interval | [ 19.2780948783683 , +inf ] |
| Right-sided Confidence Interval | [ -inf, 20.7147108770274 ] |