已知随机变量ζ服从正态分布N2,σ2，且Pξ<4=0.8，则P0<ξ<2=（）_刷题宝

题干

已知随机变量ζ服从正态分布N2,σ2，且Pξ<4=0.8，则P0<ξ<2=（）

A：0.6

B：0.4

C：0.3

D：0.2

上一题下一题 0.0难度选择题更新时间:2015-01-15 01:41:12

答案(点此获取答案解析）

C

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