Question

The state of New Jersey would like to estimate the proportion of voters who intend to participate in the upcoming statewide elections. A pilot sample of 50 voters found that 36 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95% interval with a margin of error equal to 0.05 to estimate the proportion. Verify your result using PHStat.


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  • CreatedJuly 17, 2015
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