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Standard deviation

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Standard deviation

by Taniuca » Sat Oct 08, 2011 8:25 am
the members of the newest recruiting class of an organization are taking a physical test, and those who score in thw bottom 16% will have to retest. If the scores are normally distribuited and have a mean of 72, what is the score at or below wich the recruits will have to retesr?
A) there are 500 recruits in the class
B) 10 recruits scored 82 or higher

Answer is c.
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by GmatKiss » Sat Oct 08, 2011 11:40 am
Taniuca wrote:the members of the newest recruiting class of an organization are taking a physical test, and those who score in thw bottom 16% will have to retest. If the scores are normally distribuited and have a mean of 72, what is the score at or below wich the recruits will have to retesr?
A) there are 500 recruits in the class
B) 10 recruits scored 82 or higher

Answer is c.
This is a DS question, please post your question in appropriate forum.
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