You take 900 draws at random from a large box. The null hypothesis says
that the AVE of the box equals 75. The actual AVE of the box is 77.5, and
the SD is 32. Compute z.

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