15. Overseas Travel A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% of the true proportion. Find the sample necessary if, in a prior study, a sample of 200 people showed that 40 traveled overseas last year. If no estimate of the sample proportion is available, how large should the sample be?
15. Overseas Travel A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% of the true proportion. Find the sample necessary if, in a prior study, a sample of 200 people showed that 40 traveled overseas last year. If no estimate of the sample proportion is available, how large should the sample be?
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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Transcribed Image Text:15. Overseas Travel A researcher wishes to be 95%
confident that her estimate of the true proportion
of individuals who travel overseas is within 4% of
the true proportion. Find the sample necessary if, in
a prior study, a sample of 200 people showed that
40 traveled overseas last year. If no estimate of the
sample proportion is available, how large should the
sample be?
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