Optionalalternative"two.sided" (default), "less" or "greater"; unambiguous abbreviations are accepted.
OptionalhEffect size h (esH), or "small", "medium", "large".
OptionalnNumber of observations (per group for pwr2pTest).
OptionalpowerPower of the test.
OptionalsigSignificance level. Default 0.05.
Options for pwr2pTest and pwrPTest. The quantity given as
null(or omitted, exceptsigLevel) is solved for.