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Birth weights at a local hospital have a Normal distribution, with a mean of 110 oz and a standard deviation of 15 oz. The proportion of infants with birth weights below 125 oz is: A. .500 B. .159 C. .
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Birth weights at a local hospital have a Normal distribution, with a mean of 110 oz and a standard deviation of 15 oz. The proportion of infants with birth weights below 125 oz is:

A. .500

B. .159

C. .341

D. .841

User Jonathan Spiller
by
4.6k points

1 Answer

3 votes

Answer:

125 is 1 dev above, so it's 13.5 + 2.35,

so it's B. 0.159

And i think the proportion of infants with birthweights between 125 oz and 140 oz is :

D. 0.136

User Marekful
by
3.8k points
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