Suppose you want to estimate the proportion of classmates who plan to spend their junior year abroad.
Question:
a. Build a 95% interval estimate of the overall class proportion based on your sample findings.
b. Suppose you want to reduce the margin of error by 30% at the 95% confidence level. How big a sample size would be required?
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Related Book For
Understanding Business Statistics
ISBN: 978-1118145258
1st edition
Authors: Stacey Jones, Tim Bergquist, Ned Freed
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