+ The Practice of Statistics, 4 th edition – For AP* STARNES, YATES, MOORE Chapter 10: Comparing Two Populations or Groups Section 10.1 Comparing Two Proportions.
+ Unit 6 - Comparing Two Populations or Groups. + 12.2Comparing Two Proportions 11.2Comparing Two Means.
+ Chapter 12: Inference for Proportions Section 12.2 Comparing Two Proportions.
