设总体X服从正态分布N(μ,σ2),其中μ未知,x1,x2,…,xn为其样本.若假设检验问题为H0:σ2=1,H1:σ2≠1,则采用的检验统计量应为____.
(n-1)s2。解析:由X2检验知X2=(n-1)s2/σ02=(n-1)s2.
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