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Confidence interval for the true population mean

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A survey of 50 small businesses with Web sites found that the average amount spent on a site was $11,300 per year (Fortune, March 5, 2011). Assuming a population standard deviation of $3000, show all the details in constructing a 90% confidence interval for the true population mean amount spent. Nearest 0.01.

Reference no: EM131970379

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