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随机变量X在区间(-2,1)内取值的概率应等于随机变量y=(X+3)/2在区间____内取值的概率.
分类:
概率论与数理统计(二)(02197)
发表:2024年09月14日 03时09分07秒
作者:
admin
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(2)
随机变量X在区间(-2,1)内取值的概率应等于随机变量y=(X+3)/2在区间____内取值的概率.
【正确答案】:(1/2,2)
【题目解析】:化简Y=(x+3)/2得X=2Y-3,由X∈(-2,1)得Y∈(1/2,2)
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