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If you wanted to be 95%certain that an analyst's estimate is within $50of the actual average income for each person receiving theprogram benefits, and you

If you wanted to be 95%certain that an analyst's estimate is within $50of the actual average income for each person receiving theprogram benefits, and you know that the sample standard deviation is 750,how large of a sample would the analyst need? (For sample sizes, always round up.)

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