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An advertising company wishes to estimate the mean household income for all single working professionals who own a foreign automobile. If the advertising company wants

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An advertising company wishes to estimate the mean household income for all single working professionals who own a foreign automobile. If the advertising company wants a 90% confidence interval estimate with a margin of error of 1 2300, what sample size is needed if the population standard deviation is known to be $26,500? The sample size must be at least |. (Round up to the nearest whole number.)

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