Question
An investigator conducts a study to investigate whether there is a difference in mean peak expiratory flow (PEF) in children with chronic bronchitis as compared
An investigator conducts a study to investigate whether there is a difference in mean peak expiratory flow (PEF) in children with chronic bronchitis as compared to those without.Data on PEF are collected and summarized below.
a. Construct a 95% confidence interval for the mean PEF in children without chronic bronchitis.
b. How many children would be required to ensure that the margin of error in (a) does not exceed 10 units? What is the margin of error?
Group #Children Mean PEF Std Dev PEF
Chronic Bronchitis 25 281 68
No Chronic Bronchitis 25 319 74
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Combinatorial Dynamics And Entropy In Dimension One
Authors: Lluis Alseda, Jaume Llibre, Michal Misiurewicz
1st Edition
9810213441, 9789810213442
