SOLUTION: The incomes of trainees at a local mill are normally distribution with a mean of $1,100 and a standard deviation $800. the percentage of trainees that earn $800 or less a month is

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Question 1033140: The incomes of trainees at a local mill are normally distribution with a mean of $1,100 and a standard deviation $800. the percentage of trainees that earn $800 or less a month is ____%.
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
mean = 1100
-+ 1 standard deviation = 950 or 1250
-+ 2 standard deviations = 800 or 1400

According to the normal distribution, 2.5% of trainees make $800 or less a month.