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A recent survey showed that 83% of south Florida residents prepared ahead of time hurricane Michael...

A recent survey showed that 83% of south Florida residents prepared ahead of time hurricane Michael by purchasing extra food, water, and gasoline. If researchers want to verify these results, what is the minimum number of south Florida residents want to verify these, what is the minimum number of south Florida that must be 95% confident that the estimate is within 7 percentage points of the true population percentage?

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