表721：一样本正态总体N(4,a2) 检验对象 检验统计量 分布■ 拒绝域 2>a2 4(a2已知) Z=vn(X-Ho)/o N0,1) Z>to Z<-Wa 1T1>tm-1(a/2 4(a2未知 T=v(X-Ho)/S ia-1 T>in-i(a) T<-tn-1(o) X2>X(0/2)减者x2<X2(1-0/2 a2(μ已知 X2=点（化-2 2 x2>xi(a) X2<x21-a x2>x2-《0/2)减者x2<x品-11-a/2) a2(n未知) x2=动∑（化-X2 2-1 x>x() x2<x-(1-a 十有关均值的检验：对立假设分别为肛≠，4>和：<0.有关方差的检验：对立假设分别为≠品， 2>和a2< Previous Next First Last Back Forward 11Previous Next First Last Back Forward 11