Posted by Denise on Wednesday, May 22, 2013 at 2:36am.
The scores on a standardized test are normally distributed with the mean of 750 and standard deviation 70. Find the probability that a score is more than 890.
This is from my Math Models class. I am not taking Statistics. Please someone show me how to do answer thisI don't just want an answer. I want the steps!!

Math Models  Steve, Wednesday, May 22, 2013 at 11:39am
this just involves using the Z table.
890 is 140 away from the mean.
That's 140/70 = 2σ
So, find where Z>2. That's your probability. To play around some with this, visit
http://davidmlane.com/hyperstat/z_table.html
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