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我国西部一个地区的年降水量在下列区间内的概率如下表所示 年降水量(mm) [10...
我国西部一个地区的年降水量在下列区间内的概率如下表所示
年降水量(mm) | [100,150 ) | [150,200 ) | [200,250 ) | [250,300] |
概 率 | 0.21 | 0.16 | 0.13 | 0.12 |
则年降水量在[200,300](m,m)范围内的概率是
.
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