The incomes of trainees at a local mill are normally idstributed with a mean of $1100. And a standard deviation of $150. . What percentage of trainees earn less than $900 a month.
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The incomes of trainees at a local mill are normally idstributed with a mean of $1100. And a standard deviation of $150. . What percentage of trainees earn less than $900 a month.
Just useand look it up in the z-table.
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