ead the following prompt and complete the subquestions 6.a, 6.b, 6.c, and 6.d
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Read the following prompt and complete the subquestions 6.a, 6.b, 6.c, and 6.d.
Transcribed Image Text:Question 6 Background :
Echinacea for Colds?
Rhinoviruses typically cause common colds. In order to test the effectiveness of echinacea, participating subjects were randomly divided into two
groups: subjects in group 1 were treated with echinacea and subjects in group 2 received a placebo. For each subject, we recorded whether or not
they developed rhinovirus infections.
The 90% confidence interval for the difference in population proportions between all subjects who would develop rhinovirus infections after being
treated with echinacea vs. all subjects who would develop rhinovirus infections after being treated with placebo is (-0.1193, 0.1884).
Question 6 Subquestions
6.a
What is the estimate for the difference in the two population proportions?
P1-P2 = 0.03455
P1-P2 = 0.15385
O P1-P2 = 0.0691
Transcribed Image Text:6.b
Provide the interpretation of this 90% confidence interval, in the context of the problem.
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6.c
In your own words, describe what the "margin of error" is, and describe its relationship to the "standard error".
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6.d
Based on this interval, could you conclude (at a corresponding 10% level) there is a significant difference between all subjects in the two treatment
groups in terms of the population rates who who would develop rhinovirus infections?
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CO
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