= Sample sizes for a given power comparing two independent proportions =

 * [[FAQ/tab801|Table of sample sizes for 80% power and a one-tailed test]]

 * [[FAQ/tab802|Table of sample sizes for 80% power and a two-tailed test]]

 * [[FAQ/tab901|Table of sample sizes for 90% power and a one-tailed test]]

 * [[FAQ/tab902|Table of sample sizes for 90% power and a two-tailed test]]