February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Two-sided level .05 test of a normal mean (1 sample)
Hypotheses
·Null: Mean = 0
·Alt : Mean = 2
·
Sample size
·Variance = 26.02
·100 subjects provide 97.5% power
·
Critical value (test statistic is the sample mean)
·Reject null if sample mean < -1 or > 1