Thursday

September 18, 2014

September 18, 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%.

**Answer this Question**

**Related Questions**

statistics - "suppose that IQ scores have a bell-shaped distribution with a mean...

statistics - 2. Why is it important to know the mean and standard deviation for ...

Statistics - Hi! I've been stuck on this question for a while. I know that I ...

statistics - Suppose IQ scores have a bell-shaped distribution with a mean of ...

Statistics - 1. Which of the following statements are correct? a. A normal ...

college - 1. Which of the following statements are correct? a. A normal ...

college sttistics - I have read all my material regarding how to try and figure ...

ststistics - A sample of 3000 observations has a mean of 86 and a standard ...

Statistics - The distribution of scores on a test is mound-shaped and symmetric ...

statistics - If a distribution of IQ test scores has a mean of 100 and a ...