Consider the following hypothesis test:
H_0:μ≤50
H_a:μ>50
A sample of 60 is used and the population standard deviation is 8.
Let x ¯=52.5 and α=0.05. Use the critical value approach to state your conclusion. When calculating the test statistics value, please provide the formula, at least one step of calculation, and the correct answer. The correct critical value and the conclusion are required as well for full credit.