that "n" in the equation is the number sampled. If n is much less than N, the total population, then the total population size is not an issue. "much less" is usually taken to mean 1/10 or 1/8. See discussion on sampling theory.
Jay Fred Ettish wrote: > A recent poll by the Pew Group of 15000 Muslims world wide found 71% support > Bin Laden. Looking at my textbook the formula for a population proportion > is: > > p +/- Z * SQRT ( p(1-p)/n ) > > Ok simple enough, but my question is doesn't the population size affect the > confidence interval? How does the fact that their are 2000000000 affect the > interval? > > Thanks > > . > . > ================================================================= > Instructions for joining and leaving this list, remarks about the > problem of INAPPROPRIATE MESSAGES, and archives are available at: > . http://jse.stat.ncsu.edu/ . > ================================================================= -- Jay Warner Principal Scientist Warner Consulting, Inc. 4444 North Green Bay Road Racine, WI 53404-1216 USA Ph: (262) 634-9100 FAX: (262) 681-1133 email: [EMAIL PROTECTED] web: http://www.a2q.com The A2Q Method (tm) -- What do you want to improve today? . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
