找考题网-背景图
单项选择题

设来自正态总体X~N(μ,1.52)的样本值:49.7,50.6,51.8,52.4,48.8,51.1,51……

设来自正态总体X~N(μ,1.52)的样本值:49.7,50.6,51.8,52.4,48.8,51.1,51.2,51.0,51.5。则μ的置信度为0.95的置信区间为()。

A.[49.92,51.88]
B.[49.7,51.88]
C.[50.6,51.88]
D.[49.92,51.1]

热门试题