February, 2003
© 2000, 2001  Scott S. Emerson, M.D., Ph.D.
Session 2: 47
Stopping Rules
Conditions for Early Stopping: One-sided tests
Test of a lesser alternative (q- < q0)
·Null:               H0: q ³ q0
·Alternative:    H1: q £ q- 
·
Possibilities for early stopping:
·Stop only for the null (when  Tn large)
·Stop only for the alternative (when  Tn small)
·Stop either for the null or for the alternative