pwrdemo.hlp.htm

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help for pwrdemo
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Demonstration illustrating power
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 pwrdemo mean_H1
 
 Suggested values for mean_H1 range from -1 to +5.
 

Description
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pwrdemo displays two normal distributions with sd
          equal to 1.  The distribution for H0 has 
          a mean of 0. The distribution for H1 gets 
          it mean from the argument mean_H1.
          
          The vertical line is placed so that the
          area in the upper tail of the H0 
          distribution is .05.
          
          Power is illustrated by the area of the
          H1 distribution to the right of the 
          vertical line.


Examples
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 . pwrdemo 1.5
 . pwrdemo 2.8



Author
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      Philip B. Ender
      Statistical Computing and Consulting
      UCLA, Office of Academic Computing
      ender@ucla.edu