February, 2003
© 2000, 2001  Scott S. Emerson, M.D., Ph.D.
Session 2: 46
Stopping Rules
Conditions for Early Stopping: One-sided tests
Test of a greater alternative (q+ > q0)
·Null:               H0: q £ q0
·Alternative:    H1: q ³ q+         
Possibilities for early stopping:
·Stop only for the null (when  Tn small)
·Stop only for the alternative (when  Tn large)
·Stop either for the null or for the alternative
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