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OpenStudy (anonymous):
Please help having a hard time with this!!!If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected?
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OpenStudy (anonymous):
\[E=z \alpha/2*\sigma/\sqrt{n}\]
OpenStudy (anonymous):
Do I input the 18.2 units and 25
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