Posted by **tom** on Thursday, July 21, 2011 at 10:27am.

The average score on a standardized test is 500 points with a standard deviation of 50 points. What is

the probability that a student scores between 450 and 600 on the standardized test?

- statistics -
**bobpursley**, Thursday, July 21, 2011 at 10:30am
http://davidmlane.com/hyperstat/z_table.html

- statistics -
**PsyDAG**, Thursday, July 21, 2011 at 4:07pm
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the two Z scores and calculate the proportion between them.

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