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.
In a survey of 1002 people, 701 (which is 70%) said that they voted in the most recent presidential election (based on data from ICR Research Group). The margin of error for the survey was ± 3 percentage points. However, actual voting records show that only 61% of all eligible voters actually did vote. Does this necessarily imply that people lied when they answered the survey?
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