How do you the area of the normal curve between two numbers, i.e. P(a<Z<b)?

There is an easy sequence of commands to do this:

  1. [2nd] [vars] "normalcdf"
  2. a,b [enter]
If you want the area between two numbers, and it is not the standard normal, ie mean=m, standard deviation=s, then
  1. [2nd] [vars] "normalcdf"
  2. a,b,m,s [enter]