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单选题已知事件A,B相互独立,且P(A)>0,P(B)>0,则下列等式成立的是( )

A.

B.

C.

D.

概率论与数理统计-杜辉课程封面

学科：概率论与数理统计-杜辉

时间：2023-11-20 14:39:17

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<img src="https://tihai-oss-cloud.itihey.com/img/eefb457bd6d8d2ecf0f73746d4b824ce.png">

A. 0.94B. 0.92C. 0.90D. 0.95

<img src="https://tihai-oss-cloud.itihey.com/img/c2885e61999db51cf616bd2f3f8ea441.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/5080d25ee6a69d796a3cb873f5e5e3cc.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/7310a8d1e29d1a61d3301fcda0294fa2.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f93d14c1d6c4313dd90d3bafd0ff8584.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/38c87c8df2988faab5bb4a71df460f34.png">

设A,B为随机事件,<img src="https://tihai-oss-cloud.itihey.com/img/dd13f1e03259cd551b54de95616cddb8.gif">,则<img src="https://tihai-oss-cloud.itihey.com/img/e081ef8081483fd6af1a3fda4c32997a.gif">=( )

A. 0.3B. 0.5C. 0.4D. 0.6

在10个形状大小均相同的球中有6个红球和4个白球,不放回地依次摸出2个球,在第1次摸出红球的条件下,第2次也摸到红球的概率为( )

A. <img src="https://tihai-oss-cloud.itihey.com/img/c3bc34f872d820b99ba885f6ba1c49cf.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/2fef951d2b03e9b861abb6bd5792f095.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/cfe52654a1090d94d02f4999190c0a4d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/a024a428c74d5f0634e10af7bc86b686.png">

<img src="https://tihai-oss-cloud.itihey.com/img/4404ed2e9adac5623a9b420cdb5707ec.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/513f0b1acfc750ace3611ab6adf2700f.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/1f1896a73a6d123599cf506ffb47b54e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/5d734629a2c921fdbe172c18361fabd6.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6b70c902834ba131683e2b0d50c1cd4c.png">

<img src="https://tihai-oss-cloud.itihey.com/img/0a559bcfb53d52817037ab059e1aff92.png">( )

A. <img src="https://tihai-oss-cloud.itihey.com/img/938ce2a79b699edabd20da0d7280f20e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/445f77aa058fe472438bd649604f21b1.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/90174eafae9a194e45115ebb468ed925.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/53a83a24d1b46b18d42bcebed8ff2b6b.png">

已知事件A,B相互独立,且P(A)>0,P(B)>0,则下列等式成立的是( )

A. <img src="https://tihai-oss-cloud.itihey.com/img/612bbc8bade85c896e18ad34f0a1b7f2.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/c971ca67e2a18d7b8ba8ffa454d5abb2.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/3ef9b2f98856944e2fe0cab68aa5821f.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/3a1ae3fa428414db3bc8e06a1d835264.png">

病树主人外出,委托邻居浇水,设如果不浇水,树死去的概率为0.8,若浇水则树死去的概率为0.15,有0.9的把握确定邻居会记得浇水,若主人回来树已死去,邻居忘记浇水的概率是( )

A. 60/215B. 80/215C. 50/215D. 70/215

<img src="https://tihai-oss-cloud.itihey.com/img/d42d92d9e51d3ab19230c521ac5c835a.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/aedd7f1d5336af3e8504e26d32fa59c7.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4d139f12a1878ed05ffd1adba8910216.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/3233c890943c7af9926cd9655235008e.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/5193ca64cc40c411f48adfc444a89c5e.png">

<img src="https://tihai-oss-cloud.itihey.com/img/c60eb2b4f9782728303b7484b08de085.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/834098353bc562cc9f0b1921c79c5d64.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/cdf7e4fe541b6f2789519be52e521bff.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0eb698c3ccf86dc88d60e3ea4e67d971.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/9dca36ca0d5ca40dff2083c7f09d3e02.png">

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