A sample of 40 observations is selected from a normal popula

A sample of 40 observations is selected from a normal population. The sample mean is 64, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level. What is the decsion regarding H0

Solution

Ho : mean = 64

H1 : mean =/ 64

if p value is greater than alpha / 2 that is 0.005

we fail to reject Ho

if p value is lower we reject Ho