Elementary Statistics: Picturing the World – 7th
Edition
ST
INSTRUCTOR’S
UV
SOLUTION
MANUAL
IA
_A
Ron Larson
PP
Betsy Farber
RO
Comprehensive Solutions Manual for Instructors
VE
and Students
D?
© Ron Larson & Betsy Farber
All rights reserved. Reproduction or distribution without permission is prohibited.
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©STUDYSTREAM
, CONTENTS
ST
Chapter 1 Introduction to Statistics 1
Chapter 2 Descriptive Statistics 14
UV
Chapter 3 Probability 104
Chapter 4 Discrete Probability Distributions 139
Chapter 5 Normal Probability Distributions 172
IA
Chapter 6 Confidence Intervals 225
Chapter 7 Hypothesis Testing with One Sample 254
_A
Chapter 8 Hypothesis Testing with Two Samples 308
Chapter 9 Correlation and Regression 355
PP
Chapter 10 Chi-Square Tests and the F-Distribution 407
Chapter 11 Nonparametric Tests 465
Appendix A Alternative Presentation of the Standard 516
RO
Normal Distribution
Appendix C Normal Probability Plots 517
Activities 518
Case Studies 526
VE
Uses and Abuses 552
Real Statistics−Real Decisions 563
D?
Technology 577
??
Copyright © 2019 Pearson Education, Inc.
, CHAPTER
Introduction to Statistics
1
1.1 AN OVERVIEW OF STATISTICS
ST
1.1 TRY IT YOURSELF SOLUTIONS
1. The population consists of the responses of all ninth to twelfth graders in the United States. The
UV
sample consists of the responses of the 1501 ninth to twelfth graders in the survey. The sample data
set consists of 1215 ninth to twelfth graders who said leaders today are more concerned with their
own agenda than with achieving the overall goals of the organization they serve and 286 ninth to
twelfth graders who did not say that.
2a. Population parameter, because the total spent on employees’ salaries, $5,150,694, is based on the
IA
entire company.
b. Sample statistic, because 43% is based on a subset of the population.
_A
3a. The population consists of the responses of all U.S. adults, and the sample consists of the responses of
the 1000 U.S. adults in the study.
b. The part of this study that represents the descriptive branch of statistics involves the statement “three
out of four adults will consult with their physician or pharmacist and only 8% visit a medication-
specific website [when they have a question about their medication].”
PP
c. A possible inference drawn from the study is that most adults consult with their physician or
pharmacist when they have a question about their medication.
RO
1.1 EXERCISE SOLUTIONS
1. A sample is a subset of a population.
2. It is usually impractical (too expensive and/or time consuming) to obtain all the population data.
VE
3. A parameter is a numerical description of a population characteristic. A statistic is a numerical
description of a sample characteristic.
4. The two main branches of statistics are descriptive statistics and inferential statistics.
5. False. A statistic is a numerical measure that describes a sample characteristic.
D?
6. True
7. True
??
8. False. Inferential statistics involves using a sample to draw conclusions about a population.
9. False. A population is the collection of all outcomes, responses, measurements, or counts that are of
interest.
1
Copyright © 2019 Pearson Education, Inc.
, 2 CHAPTER 1 │ INTRODUCTION TO STATISTICS
10. False. A sample statistic can differ from sample to sample.
11. Population, because it is a collection of the salaries of each member of a Major League Baseball team.
ST
12. Population, because it is a collection of the energy collected from all the solar panels on a photo
voltaic power plant.
13. Sample, because the collection of the 300 people is a subset of the population of 13,000 people in the
UV
auditorium.
14. Population, because it is a collection of the revenue of all the stores at the shopping mall.
15. Sample, because the collection of the 10 patients is a subset of the population of 50 patients at the clinic.
16. Population, because it is a collection of the number of wireless devices in all U.S. households.
IA
17. Population, because it is a collection of all the gamers’ scores in the tournament.
18. Sample, because only the age of every fourth person entering the grocery store is recorded.
_A
19. Population, because it is a collection of all the U.S. senators’ political parties.
20. Sample, because the collection of the 20 air contamination levels is a subset of the population.
21. Population: Parties of registered voters
PP
Sample: Parties of registered voters who respond to a survey
22. Population: Student donations at a food drive
Sample: Student donations of canned goods
RO
23. Population: Ages of adults in the United States who own automobiles
Sample: Ages of adults in the United States who own Honda automobiles
24. Population: Incomes of home owners in Massachusetts
Sample: Incomes of home owners in Massachusetts with mortgages
VE
25. Population: Collections of the responses of all U.S. adults
Sample: Collection of the responses of the 1020 U.S. adults surveyed
Sample data set: 42% of adults who said they trust their political leaders and 58% who said they did not
26. Population: Collection of fetal tobacco exposure of all infants
Sample: Collection of the fetal tobacco exposure of 203 infants
D?
Sample data set: Infants with fetal tobacco exposure and their focused attention levels
27. Population: Collection of the influenza immunization status of all adults in the United States
Sample: Collection of the influenza immunization status of the 3301 U.S. adults surveyed
Sample data set: 39% of U.S. adults who received an influenza vaccine and 61% who did not
??
Copyright © 2019 Pearson Education, Inc.
Edition
ST
INSTRUCTOR’S
UV
SOLUTION
MANUAL
IA
_A
Ron Larson
PP
Betsy Farber
RO
Comprehensive Solutions Manual for Instructors
VE
and Students
D?
© Ron Larson & Betsy Farber
All rights reserved. Reproduction or distribution without permission is prohibited.
??
©STUDYSTREAM
, CONTENTS
ST
Chapter 1 Introduction to Statistics 1
Chapter 2 Descriptive Statistics 14
UV
Chapter 3 Probability 104
Chapter 4 Discrete Probability Distributions 139
Chapter 5 Normal Probability Distributions 172
IA
Chapter 6 Confidence Intervals 225
Chapter 7 Hypothesis Testing with One Sample 254
_A
Chapter 8 Hypothesis Testing with Two Samples 308
Chapter 9 Correlation and Regression 355
PP
Chapter 10 Chi-Square Tests and the F-Distribution 407
Chapter 11 Nonparametric Tests 465
Appendix A Alternative Presentation of the Standard 516
RO
Normal Distribution
Appendix C Normal Probability Plots 517
Activities 518
Case Studies 526
VE
Uses and Abuses 552
Real Statistics−Real Decisions 563
D?
Technology 577
??
Copyright © 2019 Pearson Education, Inc.
, CHAPTER
Introduction to Statistics
1
1.1 AN OVERVIEW OF STATISTICS
ST
1.1 TRY IT YOURSELF SOLUTIONS
1. The population consists of the responses of all ninth to twelfth graders in the United States. The
UV
sample consists of the responses of the 1501 ninth to twelfth graders in the survey. The sample data
set consists of 1215 ninth to twelfth graders who said leaders today are more concerned with their
own agenda than with achieving the overall goals of the organization they serve and 286 ninth to
twelfth graders who did not say that.
2a. Population parameter, because the total spent on employees’ salaries, $5,150,694, is based on the
IA
entire company.
b. Sample statistic, because 43% is based on a subset of the population.
_A
3a. The population consists of the responses of all U.S. adults, and the sample consists of the responses of
the 1000 U.S. adults in the study.
b. The part of this study that represents the descriptive branch of statistics involves the statement “three
out of four adults will consult with their physician or pharmacist and only 8% visit a medication-
specific website [when they have a question about their medication].”
PP
c. A possible inference drawn from the study is that most adults consult with their physician or
pharmacist when they have a question about their medication.
RO
1.1 EXERCISE SOLUTIONS
1. A sample is a subset of a population.
2. It is usually impractical (too expensive and/or time consuming) to obtain all the population data.
VE
3. A parameter is a numerical description of a population characteristic. A statistic is a numerical
description of a sample characteristic.
4. The two main branches of statistics are descriptive statistics and inferential statistics.
5. False. A statistic is a numerical measure that describes a sample characteristic.
D?
6. True
7. True
??
8. False. Inferential statistics involves using a sample to draw conclusions about a population.
9. False. A population is the collection of all outcomes, responses, measurements, or counts that are of
interest.
1
Copyright © 2019 Pearson Education, Inc.
, 2 CHAPTER 1 │ INTRODUCTION TO STATISTICS
10. False. A sample statistic can differ from sample to sample.
11. Population, because it is a collection of the salaries of each member of a Major League Baseball team.
ST
12. Population, because it is a collection of the energy collected from all the solar panels on a photo
voltaic power plant.
13. Sample, because the collection of the 300 people is a subset of the population of 13,000 people in the
UV
auditorium.
14. Population, because it is a collection of the revenue of all the stores at the shopping mall.
15. Sample, because the collection of the 10 patients is a subset of the population of 50 patients at the clinic.
16. Population, because it is a collection of the number of wireless devices in all U.S. households.
IA
17. Population, because it is a collection of all the gamers’ scores in the tournament.
18. Sample, because only the age of every fourth person entering the grocery store is recorded.
_A
19. Population, because it is a collection of all the U.S. senators’ political parties.
20. Sample, because the collection of the 20 air contamination levels is a subset of the population.
21. Population: Parties of registered voters
PP
Sample: Parties of registered voters who respond to a survey
22. Population: Student donations at a food drive
Sample: Student donations of canned goods
RO
23. Population: Ages of adults in the United States who own automobiles
Sample: Ages of adults in the United States who own Honda automobiles
24. Population: Incomes of home owners in Massachusetts
Sample: Incomes of home owners in Massachusetts with mortgages
VE
25. Population: Collections of the responses of all U.S. adults
Sample: Collection of the responses of the 1020 U.S. adults surveyed
Sample data set: 42% of adults who said they trust their political leaders and 58% who said they did not
26. Population: Collection of fetal tobacco exposure of all infants
Sample: Collection of the fetal tobacco exposure of 203 infants
D?
Sample data set: Infants with fetal tobacco exposure and their focused attention levels
27. Population: Collection of the influenza immunization status of all adults in the United States
Sample: Collection of the influenza immunization status of the 3301 U.S. adults surveyed
Sample data set: 39% of U.S. adults who received an influenza vaccine and 61% who did not
??
Copyright © 2019 Pearson Education, Inc.
