In Testing the Hypotheses $H _ { 0 } : \mu = 25$

Essay

In testing the hypotheses: $H _ { 0 } : \mu = 25$ $H _ { 1 } : \mu \neq 25$ ,
a random sample of 36 observations drawn from a normal population whose standard deviation is 10 produced a mean of 22.8.
Explain briefly how to use the confidence interval in the previous question to test the hypothesis.