This statistical program calculates n (# of observations) needed in a 
data set for 1 or 2 samples.  (used for both means and proportions) 


Program:  Nfind
Author:  Dan Watkins (Goodman@Brahms.udel.edu)
Size:  539 bytes

This program calculates n (the # of observations) needed in a data 
sample; given:

1 or 2 samples
Means or Proportions
Width or Boundary
z alpha/2 (from a table)

If means:  input mean and variance
If proportions:  Input pHAT 
