Two-Sample Tests; Looking for Relationships Again; A Difference in Population Proportions; A Difference in Population Means; A Difference in Means: σs Known; A Difference in Means: σs Unknown but Equal; A Difference in Means: σs Unknown and Unequal; A Difference in Means: Using Paired Data; A Final Word on Two-Sample Tests Tests of Hypotheses: Contingency and Goodness-of-Fit; A Difference in Proportions: An Alternate Approach; Contingency Tables with Several Rows and/or Columns; A Final Word on Contingency Tables; Testing for Goodness-of-Fit; A Final Example on Testing for Goodness-of-Fit Tests of Hypotheses: ANOVA and Tests of Variances; A Difference in Means: An Alternate Approach; ANOVA with Several Categories; A Final Word on ANOVA; A Difference in Population Variances Simple Regression and Correlation; The Population Regression Line; The Sample Regression. Front cover; Contents; Preface; Acknowledgments; Author; Chapter 1. Introduction toStatistics; Chapter 2. Describing Data: Tables and Graphs; Chapter 3. Describing Data: Summary Statistics; Chapter 4. Basic Probability; Chapter 5. Probability Distributions; Chapter 6. Sampling and Sampling Distributions; Chapter 7. Estimation and Confidence Intervals; Chapter 8. Tests of Hypotheses: One-Sample Tests; Chapter 9. Tests of Hypotheses: Two-Sample Tests; Chapter 10. Tests of Hypotheses: Contingency and Goodness-of-Fit; Chapter 11. Tests of Hypotheses: ANOVA and Tests of Variances. Chapter 12. Simple Regression and CorrelationChapter 13. Multiple Regression; Chapter 14. Time-Series Analysis; Appendix A; Appendix B: Answers to Odd-Numbered Exercises; Appendix C; Index; Back cover. Distributions; Sampling; What Are Sampling Distributions and Why Are They Interesting; The Sampling Distribution of a Proportion; The Sampling Distribution of a Mean: σX Known; The Sampling Distribution of a Mean: σX Unknown; Other Sampling Distributions Estimation and Confidence Intervals ; Point and Interval Estimators of Unknown Population Parameters; Estimates of the Population Proportion; Estimates of the Population Mean; A Final Word on Confidence Intervals Tests of Hypotheses: One-Sample Tests ; Testing a Claim: Type I and Type II Errors; A Two-Tailed Test for the Population Proportion; A One-Tailed Alternative for the Population Proportion; Tests for the Population Mean; A Two-Tailed Test for the Population Mean; A One-Tailed Alternative for the Population Mean; A Final Word on One-Sample Tests Tests of Hypotheses.