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Sample size 
Population Variance 
Sample Mean 
Null Hypothesis about mean 
Type I error (alpha) 
R Code

Summary of computational transaction
Raw Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R ServerBig Analytics Cloud Computing Center

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

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