Testing Mean with known Variance | |
sample size | 105 |
population variance | 13 |
sample mean | 20.2857142857143 |
null hypothesis about mean | 20 |
type I error | 0.35 |
critical value (one-tailed) | 20.1355810846416 |
confidence interval (two-tailed) (sample mean) | [ 19.9568643002475 , 20.6145642711811 ] |
conclusion for one-tailed test | |
Reject the null hypothesis. | |
conclusion for two-tailed test | |
Do not reject the null hypothesis |