Hypothesis Test using the Normal Distribution
You wish to test the following claim (Ha) at a significance level of α=0.05.
Ho:μ=71.2
Ha:μ<71.2
You believe the population is normally distributed and you know the population standard deviation is σ=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.