Hypothesis Test using the Normal Distribution

You wish to test the following claim (Ha) at a significance level of =0.05.

Ho:=71.2

Ha:<71.2

You believe the population is normally distributed and you know the population standard deviation is =10.3.You obtain a sample mean of M=69.5 for a sample of size n=69.

What is the critical value for this test? (Report answer accurate to three decimal places.)

critical value =

What is the test statistic for this sample? (Report answer accurate to three decimal places.)

test statistic =

Please show how to get the critical value.