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设X~N(-1,4),Y~N(1,9)且X与Y相互独立,则X+Y~( )。
分类:
概率论与数理统计(经管类)(04183)
发表:2024年09月12日 08时09分57秒
作者:
admin
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(15)
设X~N(-1,4),Y~N(1,9)且X与Y相互独立,则X+Y~( )。
【正确答案】:N(0,13)
【题目解析】:
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