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In a random sample of 200 Vancouverites, 34.5% received the flu vaccination in the past year. You would like to calculate a 99% confidence interval.

In a random sample of 200 Vancouverites, 34.5% received the flu vaccination in the past year. You would like to calculate a 99% confidence interval. What sample size is needed for the margin of error to be at most 5%? Answer as a whole number.

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