1. After students understand how to derive and use Confidence Interval (CI) Estimation of single normal population and two normal populations, please explain the CI procedure to construct the lower and upper limits of the inequalities. Assume that you discover a new sampling distribution of two populations as a main given equation.

2. Assuming you have three groups of sample size data (n1=5, n2=10, and n3=15). How do you test for their equality of variances? Also explain the hypothesis testing procedure completely.