Table of Contents s463

Table of Contents

Preface ...... iv

Teaching Tips...... 1 Instructional Tips and Solutions for Digital Cases...... 36 Solutions to the Managing Ashland MultiComm Sercives Case...... 75 Solutions to the Harnswell Sewing Machine Company Case...... 133 Solutions to the Mountain States Potato Company Case...... 135 Chapter 1 Introduction...... 142 Chapter 2 Organizing and Visualizing Data...... 145 Chapter 3 Numerical Descriptive Measures...... 248 Chapter 4 Basic Probability...... 307 Chapter 5 Discrete Probability Distributions...... 334 Chapter 6 The Normal Distribution and Other Continuous Distributions...... 385 Chapter 7 Sampling and Sampling Distributions...... 436 Chapter 8 Confidence Interval Estimation...... 464 Chapter 9 Fundamentals of Hypothesis Testing: One-Sample Tests...... 494 Chapter 10 Two-Sample Tests...... 534 Chapter 11 Analysis of Variance...... 669 Chapter 12 Chi-Square Tests and Nonparametric Tests...... 760 Chapter 13 Simple Linear Regression...... 828 Chapter 14 Introduction to Multiple Regression...... 871 Chapter 15 Multiple Regression Model Building...... 923 Chapter 16 Time-Series Forecasting...... 971 Chapter 17 Statistical Applications in Quality Management...... 1018 Chapter 18 A Road Map for Analyzing Data...... 1053 Online Chapter 19 Decision Making...... 1147

The first part of the Instructor’s Solutions Manual contains our educational philosophy and teaching tips for each chapter of the text. Instructional tips and solutions for the digital cases follow. Answers to parts of the Managing Ashland MultiComm Services Case that is integrated throughout the text are provided for most of the chapters. The answers for the Mountain States Potato Company Case and the Harnswell Sewing Machine Company Case follow. Solutions to End-of-Section Problems and Chapter Review Problems in each chapter are included last.

This Instructor’s Solutions Manual contains more detailed solutions to facilitate grading of assignments or exams by instructors and/or teaching assistants. Screen shots using output from PHStat and Minitab are integrated throughout. Most of the problems are solved using PHStat or Minitab. To present the steps involved in solving a problem, some intermediate numerical results are presented accurate to only a reasonable number of significant digits. Hence, instructors are reminded that the final results presented in this manual that are obtained using PHStat or Minitab can sometimes be different from those obtained with a hand calculator computed using the intermediate values due to rounding.