Posted by sharon on Sunday, October 27, 2013 at 9:15pm.
If GMAT scores for applicants at Oxnard Graduate School of Business are N(500, 50) then the top 5 percent of the applicants would have a score of at least (choose the nearest integer):

statistics  PsyDAG, Monday, October 28, 2013 at 1:08pm
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) related to a Z score. Insert the values into the equation below and solve for the score.
Z = (scoremean)/SD