| Testing Mean with known Variance | |
| sample size | 37 |
| population variance | 2.80204529 |
| sample mean | 1.67393109 |
| null hypothesis about mean | 0 |
| type I error | 0.05 |
| critical value (one-tailed) | 0.452651506439688 |
| confidence interval (two-tailed) (sample mean) | [ 1.13456355258947 , 2.21329862741053 ] |
| conclusion for one-tailed test | |
| Reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Reject the null hypothesis | |