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Suppose the shipping periods in days for medical equipment are normally distributed If the population...

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Suppose the shipping periods in days for medical equipment are normally distributed If the population standard deviation is 3 days what minimum sample size is needed to be 90 confident that the sample mean is within 1 day of the true population mean Use the table above for the z score Round only at the final step Provide your answer below 20 10 20 05 70 025 20 01 20 005 1 282 1 645 1 960 2 326 2 576 medical equipment

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