Testing Mean with known Variance
sample size25
population variance0.001225
sample mean1.49
null hypothesis about mean1.5
type I error0.05
critical value (one-tailed)1.48848602461134
confidence interval (two-tailed)
(sample mean)
[ 1.47628025210822 , 1.50371974789178 ]
conclusion for one-tailed test
Do not reject the null hypothesis.
conclusion for two-tailed test
Do not reject the null hypothesis