INSTRUCTOR’S
M
SOLUTIONS MANUAL
PR
JAMES LAPP
Colorado Mesa University
ES
ELEMENTARY STATISTICS
SI
THIRTEENTH EDITION
VE
Mario F. Triola
G
R
AD
ES
,M
PR
ES
SI
The author and publisher of this book have used their best efforts in preparing this book. These efforts include the
VE
development, research, and testing of the theories and programs to determine their effectiveness. The author and
publisher make no warranty of any kind, expressed or implied, with regard to these programs or the documentation
contained in this book. The author and publisher shall not be liable in any event for incidental or consequential
damages in connection with, or arising out of, the furnishing, performance, or use of these programs.
Reproduced by Pearson from electronic files supplied by the author.
G
Copyright © 2018, 2014, 2010 Pearson Education, Inc.
Publishing as Pearson, 501 Boylston Street, Boston, MA 02116.
R
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any
form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written
permission of the publisher. Printed in the United States of America.
AD
ISBN-13: 978-0-13-446420-6
ISBN-10: 0-13-446420-6
ES
www.pearsonhighered.com
, CONTENTS
Chapter 1: Introduction To Statistics
M
Section 1-1: Statistical and Critical Thinking...................................................................1
Section 1-2: Types of Data ...............................................................................................3
Section 1-3: Collecting Sample Data................................................................................3
PR
Chapter Quick Quiz ..........................................................................................................5
Review Exercises ..............................................................................................................5
Cumulative Review Exercises ..........................................................................................6
Chapter 2: Exploring Data with Tables and Graphs
Section 2-1: Frequency Distributions for Organizing and Summarizing Data.................7
Section 2-2: Histograms..................................................................................................12
ES
Section 2-3: Graphs That Enlighten and Graphs That Deceive......................................14
Section 2-4: Scatterplots, Correlation, and Regression ..................................................17
Chapter Quick Quiz ........................................................................................................18
Review Exercises ............................................................................................................19
Cumulative Review Exercises ........................................................................................20
Chapter 3: Describing, Exploring, and Comparing Data
SI
Section 3-1: Measures of Center.....................................................................................21
Section 3-2: Measures of Variation ................................................................................26
Section 3-3: Measures of Relative Standing and Boxplots.............................................31
Chapter Quick Quiz ........................................................................................................34
VE
Review Exercises ............................................................................................................35
Cumulative Review Exercises ........................................................................................36
Chapter 4: Probability
Section 4-1: Basic Concepts of Probability ....................................................................37
Section 4-2: Addition Rule and Multiplication Rule ......................................................39
G
Section 4-3: Complements, Conditional Probability, and Bayes’ Theorem...................41
Section 4-4: Counting .....................................................................................................43
Chapter Quick Quiz ........................................................................................................45
Review Exercises ............................................................................................................46
R
Cumulative Review Exercises ........................................................................................47
Chapter 5: Discrete Probability Distributions
Section 5-1: Probability Distributions ............................................................................49
AD
Section 5-2: Binomial Probability Distributions.............................................................51
Section 5-3: Poisson Probability Distributions ...............................................................54
Chapter Quick Quiz ........................................................................................................55
Review Exercises ............................................................................................................56
Cumulative Review Exercises ........................................................................................57
ES
, Chapter 6: Normal Probability Distributions
Section 6-1: The Standard Normal Distribution .............................................................59
M
Section 6-2: Real Applications of Normal Distributions................................................60
Section 6-3: Sampling Distributions and Estimators ......................................................64
Section 6-4: The Central Limit Theorem........................................................................68
Section 6-5: Assessing Normality...................................................................................71
PR
Section 6-6: Normal as Approximation to Binomial ......................................................75
Chapter Quick Quiz ........................................................................................................77
Review Exercises ............................................................................................................78
Cumulative Review Exercises ........................................................................................79
Chapter 7: Estimating Parameters and Determining Sample Sizes
Section 7-1: Estimating a Population Proportion............................................................81
ES
Section 7-2: Estimating a Population Mean....................................................................85
Section 7-3: Estimating a Population Standard Deviation or Variance..........................89
Section 7-4: Bootstrapping: Using Technology for Estimates .......................................92
Chapter Quick Quiz ........................................................................................................94
Review Exercises ............................................................................................................95
Cumulative Review Exercises ........................................................................................96
SI
Chapter 8: Hypothesis Testing
Section 8-1: Basics of Hypothesis Testing .....................................................................97
Section 8-2: Testing a Claim About a Proportion...........................................................99
Section 8-3: Testing a Claim About a Mean.................................................................105
VE
Section 8-4: Testing a Claim About a Standard Deviation or Variance .......................109
Chapter Quick Quiz ......................................................................................................112
Review Exercises ..........................................................................................................112
Cumulative Review Exercises ......................................................................................113
Chapter 9: Chapter 9: Inferences from Two Samples
Section 9-1: Two Proportions .......................................................................................115
G
Section 9-2: Two Means: Independent Samples...........................................................124
Section 9-3: Two Dependent Samples (Matched Pairs) ...............................................130
Section 9-4: Two Variances or Standard Deviations....................................................134
R
Chapter Quick Quiz ......................................................................................................136
Review Exercises ..........................................................................................................137
Cumulative Review Exercises ......................................................................................138
AD
Chapter 10: Correlation and Regression
Section 10-1: Correlation..............................................................................................141
Section 10-2: Regression ..............................................................................................148
Section 10-3: Prediction Intervals and Variation..........................................................157
Section 10-4: Multiple Regression................................................................................159
Section 10-5: Nonlinear Regression .............................................................................161
ES
Chapter Quick Quiz ......................................................................................................165
Review Exercises ..........................................................................................................165
Cumulative Review Exercises ......................................................................................166
M
SOLUTIONS MANUAL
PR
JAMES LAPP
Colorado Mesa University
ES
ELEMENTARY STATISTICS
SI
THIRTEENTH EDITION
VE
Mario F. Triola
G
R
AD
ES
,M
PR
ES
SI
The author and publisher of this book have used their best efforts in preparing this book. These efforts include the
VE
development, research, and testing of the theories and programs to determine their effectiveness. The author and
publisher make no warranty of any kind, expressed or implied, with regard to these programs or the documentation
contained in this book. The author and publisher shall not be liable in any event for incidental or consequential
damages in connection with, or arising out of, the furnishing, performance, or use of these programs.
Reproduced by Pearson from electronic files supplied by the author.
G
Copyright © 2018, 2014, 2010 Pearson Education, Inc.
Publishing as Pearson, 501 Boylston Street, Boston, MA 02116.
R
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any
form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written
permission of the publisher. Printed in the United States of America.
AD
ISBN-13: 978-0-13-446420-6
ISBN-10: 0-13-446420-6
ES
www.pearsonhighered.com
, CONTENTS
Chapter 1: Introduction To Statistics
M
Section 1-1: Statistical and Critical Thinking...................................................................1
Section 1-2: Types of Data ...............................................................................................3
Section 1-3: Collecting Sample Data................................................................................3
PR
Chapter Quick Quiz ..........................................................................................................5
Review Exercises ..............................................................................................................5
Cumulative Review Exercises ..........................................................................................6
Chapter 2: Exploring Data with Tables and Graphs
Section 2-1: Frequency Distributions for Organizing and Summarizing Data.................7
Section 2-2: Histograms..................................................................................................12
ES
Section 2-3: Graphs That Enlighten and Graphs That Deceive......................................14
Section 2-4: Scatterplots, Correlation, and Regression ..................................................17
Chapter Quick Quiz ........................................................................................................18
Review Exercises ............................................................................................................19
Cumulative Review Exercises ........................................................................................20
Chapter 3: Describing, Exploring, and Comparing Data
SI
Section 3-1: Measures of Center.....................................................................................21
Section 3-2: Measures of Variation ................................................................................26
Section 3-3: Measures of Relative Standing and Boxplots.............................................31
Chapter Quick Quiz ........................................................................................................34
VE
Review Exercises ............................................................................................................35
Cumulative Review Exercises ........................................................................................36
Chapter 4: Probability
Section 4-1: Basic Concepts of Probability ....................................................................37
Section 4-2: Addition Rule and Multiplication Rule ......................................................39
G
Section 4-3: Complements, Conditional Probability, and Bayes’ Theorem...................41
Section 4-4: Counting .....................................................................................................43
Chapter Quick Quiz ........................................................................................................45
Review Exercises ............................................................................................................46
R
Cumulative Review Exercises ........................................................................................47
Chapter 5: Discrete Probability Distributions
Section 5-1: Probability Distributions ............................................................................49
AD
Section 5-2: Binomial Probability Distributions.............................................................51
Section 5-3: Poisson Probability Distributions ...............................................................54
Chapter Quick Quiz ........................................................................................................55
Review Exercises ............................................................................................................56
Cumulative Review Exercises ........................................................................................57
ES
, Chapter 6: Normal Probability Distributions
Section 6-1: The Standard Normal Distribution .............................................................59
M
Section 6-2: Real Applications of Normal Distributions................................................60
Section 6-3: Sampling Distributions and Estimators ......................................................64
Section 6-4: The Central Limit Theorem........................................................................68
Section 6-5: Assessing Normality...................................................................................71
PR
Section 6-6: Normal as Approximation to Binomial ......................................................75
Chapter Quick Quiz ........................................................................................................77
Review Exercises ............................................................................................................78
Cumulative Review Exercises ........................................................................................79
Chapter 7: Estimating Parameters and Determining Sample Sizes
Section 7-1: Estimating a Population Proportion............................................................81
ES
Section 7-2: Estimating a Population Mean....................................................................85
Section 7-3: Estimating a Population Standard Deviation or Variance..........................89
Section 7-4: Bootstrapping: Using Technology for Estimates .......................................92
Chapter Quick Quiz ........................................................................................................94
Review Exercises ............................................................................................................95
Cumulative Review Exercises ........................................................................................96
SI
Chapter 8: Hypothesis Testing
Section 8-1: Basics of Hypothesis Testing .....................................................................97
Section 8-2: Testing a Claim About a Proportion...........................................................99
Section 8-3: Testing a Claim About a Mean.................................................................105
VE
Section 8-4: Testing a Claim About a Standard Deviation or Variance .......................109
Chapter Quick Quiz ......................................................................................................112
Review Exercises ..........................................................................................................112
Cumulative Review Exercises ......................................................................................113
Chapter 9: Chapter 9: Inferences from Two Samples
Section 9-1: Two Proportions .......................................................................................115
G
Section 9-2: Two Means: Independent Samples...........................................................124
Section 9-3: Two Dependent Samples (Matched Pairs) ...............................................130
Section 9-4: Two Variances or Standard Deviations....................................................134
R
Chapter Quick Quiz ......................................................................................................136
Review Exercises ..........................................................................................................137
Cumulative Review Exercises ......................................................................................138
AD
Chapter 10: Correlation and Regression
Section 10-1: Correlation..............................................................................................141
Section 10-2: Regression ..............................................................................................148
Section 10-3: Prediction Intervals and Variation..........................................................157
Section 10-4: Multiple Regression................................................................................159
Section 10-5: Nonlinear Regression .............................................................................161
ES
Chapter Quick Quiz ......................................................................................................165
Review Exercises ..........................................................................................................165
Cumulative Review Exercises ......................................................................................166
