In New York City, the average of accountants' salary is $43,000. By the
normal curve, the percentage of salary is about 90 with above $40,000.
What is the SD(standard deviation) the average?

Carlos Rodriguez <carlos@math.albany.edu>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998