OPENINTRO:STATISTICS
4th Edition
ISBN: 9781943450077
Author: OPENINTRO
Publisher: amazon.com
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Chapter 1.1, Problem 2E
(a)
To determine
Obtain the percent of patients in the treatment group, who experienced improvement in symptoms.
(b)
To determine
Obtain the percent of patients in the control group, who experienced improvement in symptoms.
(c)
To determine
Identify the group that has a higher percentage of patients, who experience improvement in symptoms.
(d)
To determine
Provide a possible explanation for the observed difference between the percentages of patients in the antibiotic and placebo treatment groups who experience improvement in the symptoms of sinusitis.
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1.2 Sinusitis and antibiotics, Part I. 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 improvement in symptoms. The distribution of responses is summarized below.³
Group
Treatment
Control
Total
Self-reported improvement
in symptoms
Yes
66
65
131
No
19
16
35
Total
85
81
166
(a) What percent of patients in the treatment group experienced improvement in symptoms?
(b) What percent experienced improvement in symptoms in the control group?
(c) In which group did a higher percentage of patients experience improvement in symptoms?
(d)…
Chapter 1 Solutions
OPENINTRO:STATISTICS
Ch. 1.1 - Prob. 1GPCh. 1.1 - Prob. 1ECh. 1.1 - Prob. 2ECh. 1.2 - Prob. 2GPCh. 1.2 - Prob. 3GPCh. 1.2 - Prob. 4GPCh. 1.2 - Prob. 6GPCh. 1.2 - Prob. 7GPCh. 1.2 - Prob. 3ECh. 1.2 - Prob. 4E
Ch. 1.2 - Prob. 5ECh. 1.2 - Prob. 6ECh. 1.2 - Prob. 7ECh. 1.2 - Prob. 8ECh. 1.2 - Prob. 9ECh. 1.2 - Prob. 10ECh. 1.2 - Prob. 11ECh. 1.2 - Prob. 12ECh. 1.3 - Prob. 9GPCh. 1.3 - Prob. 11GPCh. 1.3 - Prob. 12GPCh. 1.3 - Prob. 13GPCh. 1.3 - Prob. 13ECh. 1.3 - Prob. 14ECh. 1.3 - Prob. 15ECh. 1.3 - Prob. 16ECh. 1.3 - Prob. 17ECh. 1.3 - Prob. 18ECh. 1.3 - Prob. 19ECh. 1.3 - Prob. 20ECh. 1.3 - Prob. 21ECh. 1.3 - Prob. 22ECh. 1.3 - Prob. 23ECh. 1.3 - Prob. 24ECh. 1.3 - Prob. 25ECh. 1.3 - Prob. 26ECh. 1.3 - Prob. 27ECh. 1.3 - Prob. 28ECh. 1.4 - Prob. 16GPCh. 1.4 - Prob. 17GPCh. 1.4 - Prob. 29ECh. 1.4 - Prob. 30ECh. 1.4 - Prob. 31ECh. 1.4 - Prob. 32ECh. 1.4 - Prob. 33ECh. 1.4 - Prob. 34ECh. 1 - Prob. 35ECh. 1 - Prob. 36ECh. 1 - Prob. 37ECh. 1 - Prob. 38ECh. 1 - Prob. 39CECh. 1 - Prob. 40CECh. 1 - Prob. 41CECh. 1 - Prob. 42CECh. 1 - Prob. 43CECh. 1 - Prob. 44CE
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- 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 symptoatic treatments such as acetaminophen, nasal decongestants, etc. At the end of the 10-day period, patients were asked if they experienced improvement in symptoms. The distribution of responses is summized below. We want to test if there is a difference in the improvement rates of sinusitis symptoms between the treatment and the placebo.(a) Formulate the null and alternative hypotheses(b) Calculate the test statistic and find the P-value(c) Please check the conditions required to do the test above.arrow_forwardHelp please!!arrow_forwardResearchers studying the effect of antibiotic treatment compared to symptomatic treatment for acute sinusitis randomly assigned 166 adults diagnosed with sinusitis into two groups. Participants in the antibiotic group received a 10-day course of an antibiotic, and the rest received symptomatic treatments as a placebo. These pills had the same taste and packaging as the antibiotic. At the end of the 10-day period patients were asked if they experienced improvement in symptoms since the beginning of the study. The distribution of responses is summarized below. Antibiotic Placebo Total Yes 72 60 132 No 13 21 31 Total 85 81 166 A simulation was conducted under the assumpton that the proportion of self-reported improvement with the antibiotic treatment is equal to the proportion of self-reported improvement with the palcebo. 100,000 simulated differences were generated to construct the null distribution shown. The value ˆpa,∼p^a,∼ represents the proportion of self-reported…arrow_forward
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