设正态总体X的方差为1，据来自X的容量为100的样本，测得样本均值为5,则X的期望u的置信度为0 .95的置信区间为（ ）。[东北财大2008研]

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30462' and id < 2461274 and id<>'2461274' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30462' and id > 2461274 and id<>'2461274' order by id asc limit 5