Discuss the below:
Q1. Compute the critical values for a 2-tailed z-test with alpha = 0.01. Explain your answer.
Sample mean = 78.47
Population mean = 75.8
Population standard deviation = 7.5
Standard error of the sample mean = .898
n= 100
Q2. We had to determine the critical value of z to make our accept/reject decision; In this analysis, the critical value of t is not reported. Do we need it? Why/Why not? What is it?