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【OG20-P284-355题】
Jill has applied for a job with each of two different companies. What is the probability that she will get job offers from both companies?
(1) The probability that she will get a job offer from neither company is 0.3.
(2) The probability that she will get a job offer from exactly one of the two companies is 0.5.
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题干:P(one)+P(both)+P(neither)=1
条件1:P(one)未知,不充分
条件2:P(neither)未知,不充分
结合:P(both)=1-0.3-0.5,充分
题目讨论 (3条评论)

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夜雨晴飔
我无语,条件2的意思是,a+b=0.5
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0 回复 2021-08-29 02:41:12
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击麦700+++
各位大佬请问为什么不是0.5乘0.5阿
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0 回复 2021-07-29 18:38:20
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11
1-0.5-0.3=0.2
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0 回复 2017-11-20 05:24:08
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emily666回复11
看了OG的长篇大论解释,总觉得他们的解题思路要复杂些
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0 回复 2020-04-07 10:54:32
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你这只猪回复11
概率问题 独立事件 同时发生 P(A U B) = A的概率* B的概率 , 至少发生一个 A的概率+B的概率-AB同时发生的概率
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0 回复 2020-07-01 14:52:13
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