# The Margin of Error

Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level:

90% confidence; the sample size is 1600 of which 30% are successes

The margin of error E= _____ (round to four decimal places as needed).

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#### Solution Summary

The solution finds the margin of error that corresponds to the given statistics and confidence level.

$2.19