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January 28, 2015

January 28, 2015

Posted by **Kelly** on Tuesday, June 7, 2011 at 11:37am.

- Statistics -
**MathGuru**, Tuesday, June 7, 2011 at 8:20pmUsing the z-test formula to find the test statistic:

z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size)

z = (46500 - 47000)/(5500/√30)

z = ?

Finish the calculation.

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