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Baby weights : The weight of male babies less than2 months old in the United States is normally distributed with mean 11.5 pounds and standard

Baby weights: The weight of male babies less than2 months old in the United States is normally distributed with mean 11.5

pounds and standard deviation 2.5 pounds.

(a) What proportion of babies weigh more than13 pounds?

(b) What porportion of babies weigh less than15 pounds?

(d) Is it unusual for a baby to weigh more than15 pounds?

Round answers to four decimal places.

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