Hello, Im trying to perform a post-hoc analysis to estimate the detectable differences (percentage difference of detectable
treatment means relative to control means) for a = 0.05 and a power of 80%. Does Web Power do this?...I have been
trying but cant find the correct way. Want to estimate the detectable differences of a t-test (two tailed).
If anyone can help me it would be great!!
My data are:
sample 1) N= 16; mean= 122.4; S.E ± 8.38
Sample 2) N = 20; mean= 111.4; S.E. ± 6.35
Thanks in advance!