One in five 18-year-old Americans has not graduated from high school (The Wall Street Journal, April 19,
Question:
a. Compute the point estimate for the proportion of 18-year-olds who have graduated from high school in this city.
b. Use this point estimate to derive the 95% confidence interval for the population proportion.
c. Can the mayor’s comment be justified at 95% confidence?
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Related Book For
Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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