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January 30, 2015

January 30, 2015

Posted by **Priscilla** on Tuesday, June 8, 2010 at 3:32pm.

1. below the 75th percentile

2. above the 97th percentile

3. between the 75th percentile and the 84th percentile

4. between the 84th percentile and the 97th percentile

I'm really confused about this problem but im pretty sure i would have to use the standard deviation chart.

- Algebra -
**PsyDAG**, Wednesday, June 9, 2010 at 3:08pmZ = (score - mean)/SD

Z score is your score in terms of standard deviations.

You can use your chart, or you can find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score you found.

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