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Bearings made by a certain process have normal distribution standard deviation of 0.0040 cm. A researcher wants to ensure that the error on the population

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Bearings made by a certain process have normal distribution standard deviation of 0.0040 cm. A researcher wants to ensure that the error on the population estimate for the actual average diameter of bearings made by this process is at most 0.0010 cm with 95% confidence. Determine the smallest size of the sample? 246 62 Non of them 25 97

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