Table of Contents

Introduction 1

Part I: The Questions 5

Chapter 1: Basic Vocabulary 7

Chapter 2: Descriptive Statistics 11

Chapter 3: Graphing 21

Chapter 4: Random Variables and the Binomial Distribution 33

Chapter 5: The Normal Distribution 43

Chapter 6: The t-Distribution 51

Chapter 7: Sampling Distributions and the Central Limit Theorem 57

Chapter 8: Finding Room for a Margin of Error 71

Chapter 9: Confidence Intervals: Basics for Single Population Means and Proportions 75

Chapter 10: Confidence Inter vals for Two Population Means and Proportions 91

Chapter 11: Claims, Tests, and Conclusions 97

Chapter 12: Hypothesis Testing Basics for a Single Population Mean: z- and t-Tests 105

Chapter 13: Hypothesis Tests for One Proportion, Two Proportions, or Two Population Means 117

Chapter 14: Surveys 127

Chapter 15: Correlation 131

Chapter 16: Simple Linear Regression 139

Chapter 17: Two-Way Tables and Independence 153

Part II: The Answers 165

Chapter 18: Answers 167

Appendix: Tables for Reference 469

Index 481

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