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Notes on Topic 1:
Basic Statistical Concepts

    Statistics, Science, and Observations

    Define the decision criterion by specifying a significance level.

    We would specify:


      or

      or
    The only real justification for this is that we can't calculate the exact significance level by hand, as we had to in the old days. In modern days, we skip this step, since the computer can calculate an exact significance level.
    Vista NotesTopic 8: Hypothesis TestingClassic Approach