A study was completed in California. In northern California, the study involved 1,000 patients; 74% of them experienced flu like symptoms during the month of December. The study had a margin of error of 3.2%. What does that mean for the study?
The confidence interval is between 12.1% and 236.8%.
The confidence interval is between 70.8% and 77.2%.
The confidence interval is between 67.6% and 80.4%.
The confidence interval is between 71% and 77%.
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