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Mathematics, 13.09.2021 22:50 mucciak8356

You take random sample of 200200people from Salinas and find that their average income is $48,000$48,000per year with a standard deviation of $9000$9000. Also assume that population incomes are normally distributed. Approximately how many people make between $39,000$39,000and $57,000$57,000?

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