A.dt()B.qt()C.pt()D.pnorm()
A.2n-1B.nC.2n-2D.n-1
A.t統(tǒng)計(jì)量B.Z統(tǒng)計(jì)量C.F統(tǒng)計(jì)量D.卡方統(tǒng)計(jì)量