INTRODUCTORY STATISTICS (LOOSELEAF)
3rd Edition
ISBN: 9780135163146
Author: Gould
Publisher: PEARSON
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Chapter 12, Problem 8SE
Smoking Cessation In a 2018 study reported in The New England Journal of Medicine, Halpern et al. randomly assigned smokers to one of five groups, including four smoking cessation interventions and usual care. Usual care consisted of access to information regarding the benefits of smoking cessation and to a motivational text-messaging service. The four interventions consisted of usual care plus one of the following: free cessation aids such as nicotine-replacement therapy or pharmacotherapy, free e-cigarettes, free cessation aids plus
a. Is this study an observational study or a controlled experiment? Explain.
b. Identify the treatment and response variables.
c. Can a cause-and-effect conclusion be drawn from this study? Why or why not?
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Chapter 12 Solutions
INTRODUCTORY STATISTICS (LOOSELEAF)
Ch. 12 - Dairy Products and Muscle The following two...Ch. 12 - Coffee and Depression The following two headlines...Ch. 12 - Marijuana Use and Bone Density In a 2017 study...Ch. 12 - Prob. 4SECh. 12 - Prob. 5SECh. 12 - Prob. 6SECh. 12 - Prob. 7SECh. 12 - Smoking Cessation In a 2018 study reported in The...Ch. 12 - Prob. 9SECh. 12 - Prob. 10SE
Ch. 12 - Prob. 11SECh. 12 - Sugary Drinks and Brain Health An April 2017...Ch. 12 - Expression of Feelings A 2017 Pew poll asked a...Ch. 12 - Prob. 14SECh. 12 - Prob. 15SECh. 12 - SAT Prep and Power Suppose an SAT tutoring company...Ch. 12 - Brain Games (Example 2) Researchers are interested...Ch. 12 - A Smile a Day Smiling is a sign of a good mood,...Ch. 12 - Speed Skating Suits (Example 3) Speed skating is a...Ch. 12 - Flu Vaccines and Age Suppose you want to compare...Ch. 12 - Preventing Heart Attacks with Aspirin Suppose that...Ch. 12 - Prob. 22SECh. 12 - Dietary Improvement and Depression In a 2017...Ch. 12 - Prob. 24SECh. 12 - Reading Colored Paper (Example 4) Some people...Ch. 12 - Prob. 26SECh. 12 - Prob. 27SECh. 12 - Prob. 28SECh. 12 - Prob. 29SECh. 12 - Library Audio Books Suppose a college is deciding...Ch. 12 - Prob. 31SECh. 12 - Prob. 32SECh. 12 - Prob. 33SECh. 12 - Prob. 34SECh. 12 - Prob. 35SECh. 12 - Prob. 36SECh. 12 - Prob. 37SECh. 12 - Prob. 38SECh. 12 - Prob. 39SECh. 12 - Prob. 40SECh. 12 - Prob. 41SECh. 12 - Prob. 42SECh. 12 - Prob. 43SECh. 12 - Prob. 44SECh. 12 - Yoga Study Design Refer to exercise 12.43. How...Ch. 12 - Fish Consumption Study Design Refer to exercise...Ch. 12 - Prob. 47SECh. 12 - Prob. 48SECh. 12 - Alumni Donations The alumni office wishes to...Ch. 12 - Prob. 50SECh. 12 - Prob. 51SECh. 12 - Prob. 52SECh. 12 - For exercises 12.51-12.53, evaluate the study...Ch. 12 - Prob. 54SECh. 12 - Anesthesia Care and Adverse Postoperative Outcomes...Ch. 12 - Prob. 56SECh. 12 - Prob. 57SECh. 12 - Prob. 58SE
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