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单选题设A,B互不相容,且P(A)>0,P(B)>0,则必有

A.

B.

C.

D.

概率论与数理统计课程封面

学科：概率论与数理统计

时间：2024-06-28 14:15:27

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若<img src="https://tihai-oss-cloud.itihey.com/img/c341107a35ae6cc803734a6986e87746.webp">,那么下列命题中正确的是

A. <img src="https://tihai-oss-cloud.itihey.com/img/49ccdae0d45fe8a0e12dfdcb8f3498eb.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e10b0792fd15390d21ed24a890bd74f9.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/6cb766e07dc1f245dbc8695bc4623ce9.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/038bb725e7ef13044abf7fc7328be95b.png">

设A,B互不相容,且P(A)>0,P(B)>0,则必有

A. <img src="https://tihai-oss-cloud.itihey.com/img/e2f81883d53d7919b5bd58f461396ce6.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/cf4d99561ac5d2561270062e026a4f27.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/16664b4dff2b9c2450fb339ee6fd6456.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/65585d227e200eb14c4d59e065d20206.png">

下列命题哪一个是正确的

A. <img src="https://tihai-oss-cloud.itihey.com/img/49392d3c979f9b451b6415b413d87fed.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/1d619a5fb05ea2837972476582d39f5a.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/3efcfa110c9aac371f224e0b3de4cd39.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2a76bc7e47e0085832599fbe095f757b.png">

<img src="https://tihai-oss-cloud.itihey.com/img/772bb418eb9994b09a010bedd9b95f4a.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/0058233958464ef7618089ca2a46e92e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/ce5d3c6c67bb49a159b75ea21f07d282.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/3fad06dec1a5a76ea87e352a045820d7.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6f9c93081444c71a362c83d41fa4dba7.png">

设A,B是两个事件,且<img src="https://tihai-oss-cloud.itihey.com/img/c49847b1c903b11caa8153ad467fbc7c.webp">,则下列选项必然成立的是

A. <img src="https://tihai-oss-cloud.itihey.com/img/f2432f3159ff9f5162cbfe480e0db724.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a64b48706f5c0f77008f94cbb2615d06.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/4b9386eef7d62c1644d573dca4720ae2.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/11d1ff7059b0d1df302d8aadef2d1b6e.png">

已知P(B)=0.6,P(A|B)=0.2,则P(AB)=

A. 0.12B. 0.3C. 0.5D. 0.4

已知市场上某种电子产品有三家工厂生产,其中由甲厂生产的占60%,乙厂生产的占30%,丙厂生产的占10%,又知这三个厂产品的次品率分别为0.02,0.03,0.04,所有产品混在一起.从市场上任取一件,它是次品的概率

A. 0.25B. 0.025C. 0.48D. 0.5

已知男子有5%是色盲患者,女子有0.25%是色盲患者.今从男女人数相等的人群中随机地挑选一人,恰好是色盲患者,此人是男性的概率

A. <img src="https://tihai-oss-cloud.itihey.com/img/9a4fabca511a5aaadeb7cf04d4da5a55.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/1357503290efcb1780d8857064ac3e12.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/c227fe53015e2694b6addd38c95da6fc.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/a5dda1cf391bf7d4e981e6f5024cf27d.webp">

<img src="https://tihai-oss-cloud.itihey.com/img/c044651dd8395bb4bb162f03f0843565.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/ff51a3a1f4c8f64f92fe9e1a0d29246e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/7f8da920ac13963fefc276dc4f33242c.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/5fa43ed7f7c5d216e4863b9b62ff4ea2.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/485da192c073840640839358aa114309.png">

<img src="https://tihai-oss-cloud.itihey.com/img/04ddd6ada13f5b855e71dcfee8a344a1.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/7de3e37395dac9ff9eceeddccd231e64.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/752a8681e0accbc4bfc72bfc1f44c07f.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8f84a2dd402fc24c02906206af3cd876.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/272a43fba629e1971f6f801867b8d3c9.png">

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