Posted by susan on Monday, July 1, 2013 at 9:23am.
1. A sample of n=20 has a mean of M = 40. If the standard deviation is s=5, would a score of X= 55 be considered an extreme value? Why or why not?

math  PsyDAG, Monday, July 1, 2013 at 1:09pm
Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.
Do you consider that probability extreme?