February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Session 1- Fixed Sample Design: 60
Defining the Hypotheses
Decision Theoretic Framework: One-sided tests
(Assume large q corresponds to benefit)
Test of a lesser alternative (q- < q0)
·Null:               H0: q ³ q0     (equivalent or superior)
·Alternative:    H1: q £ q-      (dangerously inferior)
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Decisions:
·Reject H0  ÜŞ T £  cL                 (inferior)
·Reject H1   ÜŞ T ³ cL    (not dangerously inferior)
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