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Finding the percentage of trainees earns less than $900 a month using normal distribution.

Find the indicated probability.

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

A. 35.31%
B. 40.82%
C. 9.18%
D. 90.82%

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