Use the information for the following info to (a) to
determine why the median salary is the same as the mean? And (b) draw a diagram
of a normal distribution to show that the value at the 90th percentile
corresponds to an area of 0.4 between z=0 and the value at the 90th percentile.

Pediatric Nurse 10th percentile – $57,591, 25th percentile – $63,600 , 75th percentile – $80,400, 90th percentile – $89,687 Senior Accountant – 10th percentile $83,666, 25th percentile – $94,500, 75th percentile – $119,700, 90th percentile – $131,809