A random sample of 100 employees at a company shows that 42 drive US made automobiles (the rest drive imported cars even though some are made in the USA). Form a 95% confidence interval for the proportion of all employees who drive US made cars. The interval is 0.42 ± what margin of error?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A random sample of 100 employees at a company
shows that 42 drive US made automobiles (the
rest drive imported cars even though some are
made in the USA). Form a 95% confidence
interval for the proportion of all employees who
drive US made cars. The interval is 0.42 ± what
margin of error?
Transcribed Image Text:A random sample of 100 employees at a company shows that 42 drive US made automobiles (the rest drive imported cars even though some are made in the USA). Form a 95% confidence interval for the proportion of all employees who drive US made cars. The interval is 0.42 ± what margin of error?
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