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December 20, 2014

December 20, 2014

Posted by **quita** on Tuesday, July 17, 2012 at 9:45pm.

a.) What % of people has an IQ score between 81 and 119?

- MAth -
**MathMate**, Tuesday, July 17, 2012 at 9:56pmZ score for 81 is (81-100)/19=-1

Z score for 119 is (119-100)/19=+1

Use normal distribution table to find the difference in probability between -1 and +1. It should be around 68%.

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