Question: A statistical quality control process for cereal production measures the weight of a cereal box. The population standard deviation is known to be .06 grams.

A statistical quality control process for cereal production measures the weight of a cereal box. The population standard deviation is known to be .06 grams. In order to achieve a 97% confidence in the estimation of the population mean weight with a margin of error of .02 grams, how large a sample should be used?

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