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Posted by **Misty** on Saturday, October 6, 2012 at 8:39pm.

19.2 - 21.1

----------

3.18

\/25

- Math Statistics -
**MathGuru**, Monday, October 8, 2012 at 5:54pmI'm assuming your problem is this:

(19.2 - 21.1)/(3.18/√25)

Calculating:

(-1.9)/(3.18/5) =

(-1.9)/(0.636) =

-2.99 (rounded to two decimal places)

I hope this helps and is what you were asking.

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