| Testing Mean with known Variance | |
| sample size | 320 |
| population variance | 0.6 |
| sample mean | 0.48 |
| null hypothesis about mean | 0.42 |
| type I error | 0.05 |
| critical value (one-tailed) | 0.491224251322347 |
| confidence interval (two-tailed) (sample mean) | [ 0.395131069944287 , 0.564868930055713 ] |
| conclusion for one-tailed test | |
| Do not reject the null hypothesis. | |
| conclusion for two-tailed test | |
| Do not reject the null hypothesis | |