Description
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places.
95% confidence; n = 2015, x = 1631
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Explanation & Answer
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E=z(.025)*sqrt(pq/n)
z(.025)= 1.96 p=1631/2015=.8094 q=.1906 n=2015
Substitute the above values to the formula to get E=.0171
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