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Average pizza delivery times to the West Loop are normally distributed with an unknown population mean...

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Statistics

Average pizza delivery times to the West Loop are normallydistributed with an unknown population mean and a populationstandard deviation of six minutes. Students in 270 at UIC collect arandom sample of 28 pizza deliveries to the West is taken and theyfind sample mean delivery time of 36 minutes. Find a 60 and95 percent confidence interval for µ.

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