Optionalalternative"two.sided" (default), "less" or "greater"; unambiguous abbreviations are accepted.
OptionalnNumber of observations.
OptionalpowerPower of the test.
OptionalrCorrelation, or "small", "medium", "large".
OptionalsigSignificance level. Default 0.05.
Options for pwrRTest. The quantity given as
null(or omitted, exceptsigLevel) is solved for.