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in a recent study, the weight of male babies less than two months old in the United States is normally distributed with mean 12.0 pounds

in a recent study, the weight of male babies less than two months old in the United States is normally distributed with mean 12.0 pounds and standard deviation 2.4 pounds. What proportion of babies weigh less than 9.1 pounds?

.8869

.1131

.0566

.9434

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