February, 2003
© 2000, 2001  Scott S. Emerson, M.D., Ph.D.
Session 2: 56
Stopping Rules
Two-sided tests
Early stopping
·If ‘a’ boundary at  -¥: no early stopping for lower alternative
·
·If ‘b’ and ‘c’ boundaries equal: no early stopping for null
·
·If ‘d’ boundary at  ¥: no early stopping for upper alternative