Determining the statistical significance of experimental results

The results of an experiment are usually expressed as one of the following: 1. The measurement of one or more numerical values, parameters of a theory, or 2. Evidence that one theoretical hypothesis is more likely to be true than another hypothesis, or 3. Evidence for or against one hypothesis being true (without mention of other possible hypotheses). The author presents the theoretical basis for assigning numerical values to the significance of such results, and discusses the practical application of that theory. (6 refs).