An aptitude test is designed to measure leadership abilities of the test subjects. Suppose that the scores on the test are normally distributed with a meanof 580 and a standard deviationof 120. The individuals who exceed 780 on this test are considered to be potential leaders. What proportion of the population are considered to be potential leaders? Round your answer to at least four decimal places.
This solution show how to determine the proportion of students who score over a given value on a test based on the mean and standard deviation.