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A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:An epidemiologist is worried about the prevalence of
the flu in East Vancouver and the potential shortage of
vaccines for the area. She will need to provide a
recommendation for how to allocate the vaccines
appropriately across the city. She takes a simple
random sample of 338 people living in East Vancouver
and finds that 31 have recently had the flu.
Suppose that the epidemiologist wants to re-estimate
the population proportion and wishes for her 95%
confidence interval to have a margin of error no larger
than 0.03. How large a sample should she take to
achieve this?
Sample size =
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