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Mathematics 18 Online
OpenStudy (anonymous):

convert 11 to a z score when a set of data items is normally distributed with a mean of 20 and a standard deviation of 4.

OpenStudy (anonymous):

Three standard deviations below the mean might be a z score of -3.

OpenStudy (kropot72):

\[z=\frac{X-\mu}{\sigma}=\frac{11-20}{4}=You\ can\ work\ this\ out\]

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