pub/simtelnet/msdos/statstic/
    size.zip    Sample size calculations

            Shareware, uploaded by the author, gdallal@world.std.com  

            A prompt driven program that determines the sample size 
        requirement for comparing population means from independent or 
        paired samples and  population proportions from independent 
        samples.  Mean differences can be stated in absolute or 
        relative (percent) terms.  Variability can be stated in terms 
        of standard deviations or intervals likely to contain most of 
        the data.  PC-SIZE: Consultant can calculate the power of 
        specific sample sizes and determine the sample size needed to 
        achieve specific power.  It can also calculate the sample size 
        needed to insure, with a specified amount of probability, that 
        a confidence interval for a single population mean or for the 
        difference between two population means does not exceed a 
        specified length.  The program can generate written reports 
        for inclusion in manuscripts and proposals.  
