Solutions for Introductory Statistics (2nd Edition)
Problem 1SE:
Choose one of the answers given. The null hypothesis is always a statement about a (sample...Problem 2SE:
Choose one of the answers in each case. In statistical inference, measurements are made on a ...Problem 3SE:
Boot Camp (Example 1) Suppose an experiment is done with criminals released from prison in a certain...Problem 4SE:
Scrubs A research hospital tries a new antibiotic scrub before surgery to see whether it can lower...Problem 5SE:
Magic A magician claims he can cause a coin to come up heads more than 50 of the time. A coin is...Problem 6SE:
Water A friend is tested to see whether he can tell bottled water from tap water. There are 30...Problem 7SE:
Heart Attack Prevention A new drug is being tested to see whether it can reduce the chance of heart...Problem 8SE:
Stroke Survival Rate The proportion of people who live after suffering a stroke is 0.85. Suppose...Problem 9SE:
Coin Flips (Example 2) A coin is flipped 30 times and comes up heads 18 times. You want to test the...Problem 10SE:
Die Rolls You roll a six-sided die 30 times and land on an ace (a one) 6 times. You want to test the...Problem 12SE:
Multiple-Choice Test A teacher is giving an exam with 20 multiple-choice questions, each with four...Problem 13SE:
Dropouts According to Time magazine (June 11, 2012), the dropout rate for all college students with...Problem 15SE:
Boot Camp, Again (Example 4) Refer to Exercise 8.3. Suppose 100 people attend boot camp and 44 of...Problem 17SE:
Coke versus Pepsi (Example 5) Suppose you are testing someone to see whether she or he can tell Coke...Problem 18SE:
St. Louis Jury Pool St. Louis County is 24 African American. Suppose you are looking at jury pools,...Problem 19SE:
Coke vs. Pepsi (Example 6) Suppose you are testing someone to see if he or she can tell Coke from...Problem 21SE:
Cheating? A professor creates two versions of a 20 question multiple choice quiz. Each question has...Problem 22SE:
Guessing A 20-question multiple choice quiz has five choices for each question. Suppose that a...Problem 23SE:
Dreaming (Example 7) A 2003 study of dreaming published in the journal Perceptual and Motor Skills...Problem 24SE:
Age Discrimination About 30 of the population in Silicon Valley, a region in California, are between...Problem 25SE:
Marriage Obsolete (Example 8) When asked whether marriage is becoming obsolete, 782 out of 2004...Problem 27SE:
Coke versus Pepsi A taste test is done to see whether a person can tell Coke from Pepsi. In each...Problem 28SE:
Seat Belts Suppose we are testing people to see whether the rate of use of seat belts has changed...Problem 29SE:
Sleep Walking (Example 9) According to Time magazine (May 28, 2012), 33 of people in the United...Problem 31SE:
Sleep Walking, Again (Example 10) According to Time magazine (May 28, 2012), of people in the U.S....Problem 32SE:
Women CEOs, Again the percentage of female CEOs in 2013 in fortune 500 companies was 4#37; according...Problem 33SE:
p-Values For each graph, indicate whether the shaded area could represent a p-value. Explain why or...Problem 34SE:
p-Values For each graph, state whether the shaded area could represent a p-value. Explain why or why...Problem 35SE:
Gun Control Historically, the percentage of U.S. residents who support stricter gun control laws has...Problem 36SE:
Death Penalty A Pew Poll in November 2011 showed that 1241 out of 2001 randomly polled people favor...Problem 38SE:
Plane Crashes According to one source, 50 of plane crashes are due at least in part to pilot error...Problem 39SE:
Mercury in Freshwater Fish Some experts believe that 20 of all freshwater fish in the United States...Problem 41SE:
Morse’s Proportion of ts Samuel Morse determined that the percentage of ts in the English language...Problem 42SE:
Morse’s Proportion of as Samuel Morse determined that the percentage of as in the English language...Problem 43SE:
p-Values (Example 11) A researcher carried out a hypothesis test using a two-sided alternative...Problem 44SE:
Coin Flips A test is conducted in which a coin is flipped 30 times to test whether the coin is...Problem 45SE:
Errors with Pennies (Example 12) Suppose you are spinning pennies to test whether you get biased...Problem 46SE:
Errors with Toast Suppose you are testing someone to see whether he or she can tell butter from...Problem 47SE:
Blackstone on Errors in Trials Sir William Blackstone 1723-1780 wrote influential books on common...Problem 48SE:
Alpha By establishing a small value for the significance level, are we guarding against the first...Problem 49SE:
Flaws (Example 13) A person spinning a 1962 penny gets 10 heads out of 50 spins. Because she gets a...Problem 50SE:
Flaws The null hypothesis on true/false tests is that the student is guessing, and the proportion of...Problem 51SE:
Which Method? A proponent of a new proposition on a ballot wants to know whether the proposition is...Problem 52SE:
Which Method? A proponent of a new proposition on a ballot wants to know the population percentage...Problem 53SE:
Effectiveness of Financial Incentives A psychologist is interested in testing whether offering...Problem 54SE:
Is it acceptable practice to look at your research results, note the direction of the difference,...Problem 55SE:
If we reject the null hypothesis, can we claim to have proved that the null hypothesis is false? Why...Problem 56SE:
If we do not reject the null hypothesis, is it valid to say that we accept the null hypothesis? Why...Problem 57SE:
When a person stands trial for murder, the jury is instructed to assume that the defendant is...Problem 58SE:
When, in a criminal court, a defendant is found “not guilty,” is the court saying with certainty...Problem 59SE:
Arthritis A magazine advertisement claims that wearing a magnetized bracelet will reduce arthritis...Problem 60SE:
No-Carb Diet A weight-loss diet claims that it causes weight loss by eliminating carbohydrates...Problem 61SE:
When comparing two sample proportions with a two-sided alternative hypothesis, all other factors...Problem 62SE:
When comparing two sample proportions with a two-sided alternative hypothesis, all other factors...Problem 69SE:
Smiling and Gender (Example 15) In a 1997 study, people were observed for about 10 seconds in public...Problem 73CRE:
Choosing a Test and Giving the Hypotheses Give the null and alternative hypotheses for each test,...Problem 74CRE:
Choosing a Test and Naming the Population(s) In each case, choose whether the appropriate test is a...Problem 76CRE:
Butter Taste Test A man is tested to determine whether he can tell butter from margarine. He is...Problem 77CRE:
Biased Coin? A study is done to see whether a coin is biased. The alternative hypothesis used is...Problem 78CRE:
Biased Coin? A study is done to see whether a coin is biased. The alternative hypothesis used is...Problem 80CRE:
Coin Flips Suppose you tested 50 coins by flipping each of them many times. For each coin, you...Problem 84CRE:
Weight Loss in Men Many polls have asked people 'whether they are trying to lose weight. A Gallup...Problem 89CRE:
Wording of Polls A poll in California (done by the Public Policy Institute) asked whether the...Problem 91CRE:
Three-Strikes Law California’s controversial “three-strikes law” requires judges to sentence anyone...Problem 95CRE:
A friend claims he can predict the suit of a card drawn from a standard deck of 52 cards. There are...Problem 96CRE:
A friend claims he can predict how a six-sided die will land. The parameter, p, is the long-run...Problem 97CRE:
Votes for Independents Judging on the basis of experience, a politician claims that 50 of voters in...Problem 98CRE:
Votes for Independents Refer to Exercise 8.97. Suppose 14 out of 20 voters in Pennsylvania report...Problem 99CRE:
Texting While Driving The mother of a teenager has heard a claim that 25 of teenagers who drive and...Problem 100CRE:
True/False Test A teacher giving a true/false test wants to make sure her students do better than...Problem 101CRE:
ESP Suppose a friend says he can predict whether a coin flip will result in heads or tails. You test...Problem 102CRE:
ESP Again Suppose a friend says he can predict whether a coin flip will result in heads or tails....Problem 103CRE:
Does Hand Washing Save Lives? In the mid-1800s, Dr. Ignaz Semmelweiss decided to make doctors wash...Browse All Chapters of This Textbook
Chapter 1 - Introduction To DataChapter 2 - Picturing Variation With GraphsChapter 3 - Numerical Summaries Of Center And VariationChapter 4 - Regression Analysis: Exploring Associations Between VariablesChapter 5 - Modeling Variation With ProbabilityChapter 6 - Modeling Random Events: The Normal And Binomial ModelsChapter 7 - Survey Sampling And InferenceChapter 8 - Hypothesis Testing For Population ProportionsChapter 9 - Inferring Population MeansChapter 10 - Associations Between Categorical Variables
Book Details
We live in a data-driven world, and the goal of this text is to teach students how to access and analyze these data critically. Authors Rob Gould and Colleen Ryan emphasize that learning statistics extends beyond the classroom to an essential life skill, and want students to develop a "data habit of mind." Regardless of their math backgrounds, students will learn how to think about data and how to reason using data. With a clear, unintimidating writing style and carefully chosen pedagogy, this text makes data analysis accessible to all students.
Sample Solutions for this Textbook
We offer sample solutions for Introductory Statistics (2nd Edition) homework problems. See examples below:
More Editions of This Book
Corresponding editions of this textbook are also available below:
Introductory Statistics, Books a la Carte Plus NEW MyLab Statistics with Pearson eText - Access Card Package (2nd Edition)
2nd Edition
ISBN: 9780134216386
INTRO STAT CODE ONLY W/ STAT CRUNCH
2nd Edition
ISBN: 9780134453699
Student Solutions Manual For Introductory Statistics Exploring The World Through Data
2nd Edition
ISBN: 9780321978394
Introductory Statistics: Exploring the World through Data, Books a la Carte Edition (2nd Edition)
2nd Edition
ISBN: 9780321978509
Introductory Statistics: Exploring The World Through Data, Canadian Edition,
17th Edition
ISBN: 9780321823656
Introductory Statistics Exploring The World Through Data (preliminary Edition Volume 2)
12th Edition
ISBN: 9780321784636
Ten Lessons in Introductory Sociology
2nd Edition
ISBN: 9780190663872
Introductory Statistics Plus Mylab Statistics With Pearson Etext -- Access Card Package (2nd Edition)
2nd Edition
ISBN: 9780133956504
INTRODUCTORY STATISTICS-PACKAGE (LL)
2nd Edition
ISBN: 9780134453705
Introductory Statistics: Exploring The World Through Data
1st Edition
ISBN: 9780321322159
Introductory Statistics + MyStatLab Student Access Kit
1st Edition
ISBN: 9780321891938
Introductory Statistics: Exploring The World Through Data, Books A La Carte Plus Mystatlab -- Access Card Package
1st Edition
ISBN: 9780321839749
Introductory Statistics: Exploring The World Through Data, Books A La Carte Edition
1st Edition
ISBN: 9780321780638
Student Solutions Manual For Introductory Statistics: Exploring The World Through Data
1st Edition
ISBN: 9780321756404
Introductory Statistics Plus Mylab Statistics With Pearson Etext -- Access Card Package (3rd Edition)
3rd Edition
ISBN: 9780135229996
INTRODUCTORY STATISTICS (LOOSELEAF)
3rd Edition
ISBN: 9780135163146
The King's minion: Richelieu, Louis XIII, and the affair of Cinq-Mars
3rd Edition
ISBN: 9780135163108
INTRO TO STATS (LL) +MYLAB STATS >BI<
3rd Edition
ISBN: 9780135268674
INTRODUCTORY STAT. W/MYLAB MATH>CUSTOM<
3rd Edition
ISBN: 9780135231548
Pearson eText Introductory Statistics: Exploring the World Through Data -- Instant Access (Pearson+)
3rd Edition
ISBN: 9780136880882
EP INTRODUCTORY STATISTICS-MYSTATLAB
3rd Edition
ISBN: 9780135190210
INTRODUCTORY STATISTICS-MYSTATLAB
3rd Edition
ISBN: 9780135190234
Introductory Statistics
3rd Edition
ISBN: 9780135188927
Student Solutions Manual For Introd
3rd Edition
ISBN: 9780135189238
INTRO STATISTICS:EXPLORING ...LL W/ MYL
3rd Edition
ISBN: 9780135991237
Related Statistics Textbooks with Solutions
Still sussing out bartleby
Check out a sample textbook solution.