| Hypothesis Test about the Mean - Confidence Interval | |
| Sample size | 289 |
| Sample standard deviation | 33.8698624115453 |
| Confidence | 0.9 |
| Null hypothesis | 30 |
| Sample Mean | 54.8719723183391 |
| 2-sided Confidence Interval | [ 51.5842812456848 , 58.1596633909934 ] |
| Left-sided Confidence Interval | [ 52.3128093667097 , +inf ] |
| Right-sided Confidence Interval | [ -inf, 57.4311352699685 ] |