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January 30, 2015

January 30, 2015

Posted by **Emmanuel** on Monday, November 15, 2010 at 9:34pm.

- statistics -
**MathGuru**, Monday, November 15, 2010 at 9:41pmFormula:

CI90 = mean + or - 1.645(sd/√n)

With your data:

CI90 = 13.6 + or - 1.645(17/√40)

I'll let you take it from here.

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