设随机变量X服从正态分布N(μ,σ2),则随着σ的增大,概率P{|x-μ|

作者: tihaiku 人气: - 评论: 0
问题 设随机变量X服从正态分布N(μ,σ2),则随着σ的增大,概率P{|x-μ|<σ}应该()。
选项 A.单调增大 B.单调减少 C.保持不变 D.增减不变
答案 C
解析 不变。

相关内容:变量,正态分布,概率

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