
 NPWRC :: Statistical Significance Testing 
  This null hypothesis is generally the opposite of the research hypothesis, which is what the investigator truly believes and wants to demonstrate. 
  Hence, P, the outcome of a statistical hypothesis test, depends on results that were not obtained, that is, something that did not happen, and what the intentions of the investigator were. 
  In 1963, Clark (1963:466) noted that it was "no longer a sound or fruitful basis for statistical investigation." Bakan (1966:436) called it "essential mindlessness in the conduct of research." The famed quality guru W. Edwards Deming (1975) commented that the reason students have problems understanding hypothesis tests is that they may be trying to think. 
 www.npwrc.usgs.gov /resource/methods/statsig/stathyp.htm (2380 words) 
