Ten Lessons in Introductory Sociology2nd EditionKenneth A. Gould; Tammy L. Lewis Publisher: Oxford University Press Academic USISBN: 9780190663872
Ten Lessons in Introductory Sociology
Solutions for Ten Lessons in Introductory Sociology
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
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