February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Frequentist Methods 1: 40
Example
Power: Alternative sampling density tail beyond crit value
Fixed sample test: variance 26.02, N 100
·Mean 0.00: Prob that sample mean > 1 is 0.025
·Mean 1.43: Prob that sample mean > 1 is 0.800
·Mean 2.00: Prob that sample mean > 1 is 0.975
O’Brien-Fleming stopping rule: variance 26.02, max N 100
·Mean 0.00: Prob that sample mean > 1 is 0.027
·Mean 1.43: Prob that sample mean > 1 is 0.794
·Mean 2.00: Prob that sample mean > 1 is 0.970