Testing Mean with known Variance | |
sample size | 9 |
population variance | 2 |
sample mean | -4 |
null hypothesis about mean | 0 |
type I error | 0.05 |
critical value (one-tailed) | -0.775391435784449 |
confidence interval (two-tailed) (sample mean) | [ -4.92393588289979 , -3.07606411710021 ] |
conclusion for one-tailed test | |
Reject the null hypothesis. | |
conclusion for two-tailed test | |
Reject the null hypothesis |