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【单选题】

设来自正态总体X~N(μ,1.52)的样本值:49.7,50.6,51.8,52.4,48.8,51.1,51.2,51.0,51.5。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]
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参考解析:
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