Describe FAQ/categ here.
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]