Introductory Statistics (2nd Edition)
2nd Edition
ISBN: 9780321978271
Author: Robert Gould, Colleen N. Ryan
Publisher: PEARSON
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Chapter 12, Problem 10SE
a.
To determine
Determine the treatment and response variables.
b .
To determine
Determine the causality and write the conclusion.
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Students have asked these similar questions
1.2 Sinusitis and antibiotics. Researchers studying the effect of antibiotic treatment for acute
sinusitis compared to symptomatic treatments randomly assigned 166 adults diagnosed with acute
sinusitis to one of two groups: treatment or control. Study participants received either a 10-day
course of amoxicillin (an antibiotic) or a placebo similar in appearance and taste. The placebo
consisted of symptomatic treatments such as acetaminophen, nasal decongestants, etc. At the end
of the 10-day period patients were asked if they experienced significant improvement in symptoms.
The distribution of responses is summarized below.52
Group
Treatment
Control
Total
Self-reported significant
improvement in symptoms
No
19
16
35
Yes
66
65
131
Total
85
81
166
(a) What percent of patients in the treatment group experienced a significant improvement in
symptoms? What percent in the control group?
(b) Based on your findings in part (a), which treatment appears to be more effective for sinusitis?
(c) Do…
A recent study compared patients who developed a central venous catheter infection. the investigators then reviewed the medical history of each patient to determine possible risk factors for a central venous catheter infection. Which of the following best describes this study design?
a. case series
b. case-control study
c. cohort study
d. randomized controlled trial
e. systemic review
From the same cohort, all cases and 10 controls per case were chosen for analysis. The following
results were observed.
Serum Level of Vitamin D
Incident Cases of MS
Healthy
Individuals
Above 40 ng per ml
2
40
20-40 ng per ml
4
40
Below 20 ng per ml
4
20
What is the total cost of the vitamin D assays in this nested case control study?
O $2,200
O $1,100
O $1650
$550
Chapter 12 Solutions
Introductory Statistics (2nd Edition)
Ch. 12 - Dairy Products and Muscle The following two...Ch. 12 - Coffee and Depression The following two headlines...Ch. 12 - Prob. 3SECh. 12 - Prob. 4SECh. 12 - Prob. 5SECh. 12 - Prob. 6SECh. 12 - Niacin and Heart Disease The New England Journal...Ch. 12 - Prob. 8SECh. 12 - Prob. 9SECh. 12 - Prob. 10SE
Ch. 12 - Prob. 11SECh. 12 - Prob. 12SECh. 12 - Prob. 13SECh. 12 - Prob. 14SECh. 12 - Prob. 15SECh. 12 - Options on Global Warming People were asked...Ch. 12 - Prob. 17SECh. 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 - Swimsuits and Racing Speeds (Example 3) New, slick...Ch. 12 - Flu Vaccines and Age Suppose you want to compare...Ch. 12 - Preventing Heart Attacks with Aspirin Suppose that...Ch. 12 - Prob. 24SECh. 12 - Prob. 25SECh. 12 - Prob. 26SECh. 12 - Reading Colored Paper (Example 4) Some people...Ch. 12 - Prob. 28SECh. 12 - Prob. 29SECh. 12 - Prob. 30SECh. 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 - Prob. 45SECh. 12 - Prob. 46SECh. 12 - Prob. 47SECh. 12 - Prob. 48SECh. 12 - Prob. 49SECh. 12 - Prob. 50SECh. 12 - Alumni Donations The alumni office wishes to...Ch. 12 - Prob. 52SECh. 12 - Drug for Asthma (Example 7) Eosinophils are a form...Ch. 12 - Blood Sugar Refer to Exercise 12.50 on tight...Ch. 12 - Prob. 55SECh. 12 - Prob. 56SECh. 12 - Prob. 57CRECh. 12 - Prob. 58CRECh. 12 - Prob. 59CRECh. 12 - Prob. 60CRE
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