题目
_(1) ,A2,..,10为来自总体_(1) ,A2,..,10为来自总体_(1) ,A2,..,10为来自总体_(1) ,A2,..,10为来自总体_(1) ,A2,..,10为来自总体_(1) ,A2,..,10为来自总体,_(1) ,A2,..,10为来自总体,_(1) ,A2,..,10为来自总体





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题目解答
答案
根据置信区间的估计公式:


=0.255

=1.8
所以样本方差95%的置信区间为(0.255,1.8)





,
,
根据置信区间的估计公式:


=0.255

=1.8
所以样本方差95%的置信区间为(0.255,1.8)