Margin of Error. The following summaries of statistical studies give a sample statistic and a margin of error. Find the confidence interval and answer any additional questions.
A poll is conducted the day before an election for state senator. There are only two candidates running. The poll shows that 53% of the voters surveyed favor the Republican candidate, with a margin of error of ±2.5 percentage points. Should the Republican plan a victory party? Why or why not?
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