Homework Help: find the probability

Posted by shasha on Thursday, May 27, 2010 at 1:00am.

the incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation of 150. what percentage of trainees earn less than $900 a month?

find the probability - Reiny, Thursday, May 27, 2010 at 6:50am
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