Posted by **Math-Stastistics** on Thursday, July 25, 2013 at 8:07am.

A simple random sample of voters will be taken in a large state. Researchers will use the methods of our course to construct an approximate 95% confidence interval for the percent of the state’s voters who will vote for Candidate X. The minimum sample size needed to ensure that the width of the interval (right end minus left end) is at most 6% is __________. (Fill in the blank with a positive integer; correct to the nearest 50 is OK.)

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