Testing Mean with known Variance | |
sample size | 63 |
population variance | 14 |
sample mean | 21 |
null hypothesis about mean | 20 |
type I error | 0.05 |
critical value (one-tailed) | 20.7753914357844 |
confidence interval (two-tailed) (sample mean) | [ 20.0760641171002 , 21.9239358828998 ] |
conclusion for one-tailed test | |
Reject the null hypothesis. | |
conclusion for two-tailed test | |
Reject the null hypothesis |