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Tju [1.3M]
2 years ago
14

The weights of 12-year old boys are normally distributed with a mean of 89 lbs. If 68% of 12 year old boys are between the weigh

ts of 82.7 lbs and 95.3 lbs, what is the standard deviation?
A
34
B
6.3
C
3.5
D
12.6
Mathematics
1 answer:
cricket20 [7]2 years ago
6 0
This is the answer B. This is because if you want to be treated the way you do treat people.
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A suitable calculator can add the terms for you. (See attached)

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