Find a 95% confidence interval for the mean weight

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A shipment of 1000 small lab mice arrives at the animal care facility with a nominal weight of 10 g per mouse. A sample of 20 mice is selected and weighed. The average weight of the sample is 10.2 g. From past shipments, it is known that the standard deviation of weight among mice is 2 g. Find a 95% confidence interval for the mean weight of all the mice in the shipment.

Reference no: EM13216128

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