We covered Ch. 9-1 Review and Preview, 9-2 Two Proportions (Testing two populations and comparing them, hypothesis testing, critical value method, and confidence intervals), 9-3 Two Means: Independent Samples (Cases where the standard deviation is unknown and known), 9-4 Two Dependent Samples (Matched pairs, t-test), and 9-5 Two variances or standard deviations, F-Test). We previewed Ch. 10 Correlation and Regression.