n.indep.t.test.eq       Sample size for independent Student's t-test
                        with equal group size
n.indep.t.test.neq      Sample size for independent Student's t-test
                        with unequal group size
n.paired.t.test         Sample size for paired Student's t-test
n.welch.test            Sample size for Student's t-test with Welch
                        approximation
n.wilcox.ord            Sample size for Wilcoxon-Mann-Whitney test on
                        ordinal data with and without ties
samplesize-package      Computes sample size for Student's t-test,
                        Student's t-test with Welch approximation and
                        Wilcoxon-Mann-Whitney test on ordinal data
