Two studies were completed in California. One study in northern California involved 1,000 patients; 74% of them experienced flulike symptoms during the month of December. The other study, in southern California, involved 500 patients; 34% of them experienced flulike symptoms during the same month. Which study has the smallest margin of error for a 98% confidence interval?
-The northern California study with a margin of error of 3.2%. -The southern California study with a margin of error of 3.2%. -The northern California study with a margin of error of 4.9%. -The southern California study with a margin of error of 4.9%.
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Can someone help me @Preetha
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please
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