It is said that the average weight of healthy 12-hour-old infants is supposed to be 7.5 lb.
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It is said that the average weight of healthy 12-hour-old infants is supposed to be 7.5 lb. A sample of newborn babies from a low-income neighborhood yielded the following weights (in pounds) at 12 hours after birth:
6.0 8.2 6.4 4.8 8.6 8.0 6.0 7.5 8.1 7.2 At the 0.01 significance level, can we conclude that babies from this neighborhood are underweight? LO.1
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