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January 28, 2015

January 28, 2015

Posted by **nichole** on Tuesday, May 8, 2012 at 6:50am.

What percent of the data is between 515 and 585?

- Math -
**MathMate**, Tuesday, May 8, 2012 at 7:12amNormalize 515 and 585, namely

z(515)=(515-550)/35=-1

z(585)=(585-550)/35=1

The percent is the difference of probabilities of one-tail z-values between -1 and +1. It should be a little less than 70%.

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