February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Session 1- Fixed Sample Design: 52
Classical Hypothesis Testing
Classical One-sided Test (Lesser Alternative)
Let
·q (a parameter) summarize treatment effect
·T (a statistic) tend to be large for larger q
·cL be a critical value chosen by some criterion
Null Hypothesis:             H0: q = q0
Alternative Hypothesis:  H1: q < q0
Reject H0                        ÜŞ         T £ cL
Do not reject H0         ÜŞ         T > cL