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 national survey by the Pew Research Center for the People and the Press of 1521 respondents reached on land lines and cell phones found that the percentage of adults who favor legalized abortion has dropped from 54% a year ago to 46%. The study claimed that the error attributable to sampling is ±3 percentage points. Would you claim that a majority of American oppose legalized abortion?
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