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November 26, 2014

November 26, 2014

Posted by **Angela** on Wednesday, March 11, 2009 at 5:06pm.

Calculate the margin of error( round to the nearest hunderth)

- statistics -
**MathGuru**, Wednesday, March 11, 2009 at 8:24pmMargin of error = + or - (z-value)(s/√n)

...where z-value is found using a z-table for 99% confidence, s = standard deviation, and n = sample size.

Look up the value in the table, then substitute what you know into the formula.

I hope this will help get you started.

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