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Baby weights at birth and mean

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We have been taking the birth weight of babies for many years. The average baby weighs 7.5 pounds, with a standard deviation of .75 pounds. A group of women at risk for having low birth weight babies volunteered for a program designed to provide special nutrition and prenatal care to pregnant women, with the intention of elevating the baby's weight. They took a sample of 22 baby's weights at birth and their mean was 7.9 lbs. Did the intervention improve the sample's birth weights?

Reference no: EM132483518

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