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14) A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she

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14) A nurse at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she desires to be 99% confident that the true mean is within 4 ounces of the sample mean? The standard deviation of the birth weights is known to be 9 ounces

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