At 09:42 PM 4/3/02 +0200, Virgil Stokes wrote: >Is there an exact algorithm for calculating the sample size in a paired >t-test for >the mean difference when: > > 1) the standard deviation of the population is unknown
if you can't assume that the two sigmas are some values .... different or the same ... then i think you will NOT have one of the pieces of information needed to solve for n in this scenario > 2) there is a finite population > 3) continuous measurements > 4) both alpha and beta (or the power) for the test are specified > >Any references would be appreciated. and, if you know beta ... then you know power but, power for WHAT? detecting a difference of how large between the null and the assumed to be true effect? without other information ... i think you are in a pickel >--V. Stokes > >. >. >================================================================= >Instructions for joining and leaving this list, remarks about the >problem of INAPPROPRIATE MESSAGES, and archives are available at: >. http://jse.stat.ncsu.edu/ . >================================================================= Dennis Roberts, 208 Cedar Bldg., University Park PA 16802 <Emailto: [EMAIL PROTECTED]> WWW: http://roberts.ed.psu.edu/users/droberts/drober~1.htm AC 8148632401 . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
