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单选题 某人射击时,中靶的概率为3/4,如果射击直到中靶为止,则射击次数为3的概率为( )
A. 
B. 
× 
C. 
×3/4
D. 
学科：概率统计--作业与练习
时间：2024-03-14 01:17:09
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相关作业
题目1单选题
以<img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">表示事件"甲种产品畅销,乙种产品滞销",则其对立事件<img src="https://tihai-oss-cloud.itihey.com/img/febb01aa69ed89046eeaec180fb489ae.png">为( )A. 甲种产品滞销,乙种产品畅销B. 甲乙产品均畅销C. 甲种产品滞销D. 甲产品滞销或乙种产品畅销
题目2单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">,<img src="https://tihai-oss-cloud.itihey.com/img/24f1ca0e68eb0d6682f48a8f0e970a92.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ce524001b951b381ed36da44ca4cf40.png">是三个事件,则<img src="https://tihai-oss-cloud.itihey.com/img/77867778d83c37d0a3799b9dc69aa9dd.png">表示( )A. <img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">,<img src="https://tihai-oss-cloud.itihey.com/img/24f1ca0e68eb0d6682f48a8f0e970a92.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ce524001b951b381ed36da44ca4cf40.png">都发生B. <img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">,<img src="https://tihai-oss-cloud.itihey.com/img/24f1ca0e68eb0d6682f48a8f0e970a92.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ce524001b951b381ed36da44ca4cf40.png">都不发生C. <img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">,<img src="https://tihai-oss-cloud.itihey.com/img/24f1ca0e68eb0d6682f48a8f0e970a92.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ce524001b951b381ed36da44ca4cf40.png">至少有一个发生D. <img src="https://tihai-oss-cloud.itihey.com/img/54f4567d5d1aa85ddf2c5f3ce75ecf98.png">,<img src="https://tihai-oss-cloud.itihey.com/img/24f1ca0e68eb0d6682f48a8f0e970a92.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ce524001b951b381ed36da44ca4cf40.png">不多于一个发生
题目3单选题
事件<img src="https://tihai-oss-cloud.itihey.com/img/9fda81768f27bf5bd597d4ca12634457.png">又可表示为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/63cdbfa4898fd7c3582f45e2612368e6.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/da67a832df3b7803710fa33fdf6a02c2.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/bdc04bbe8ec6367230de45f06deadf82.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/95b599a4df3eaece613f3ed02e388aa3.png">
题目4单选题
对于任意事件<img src="https://tihai-oss-cloud.itihey.com/img/a713b51ea3a6b4aaac47146015fc102a.png">,有<img src="https://tihai-oss-cloud.itihey.com/img/2c93686d06167805bebd6548a12dd09a.png">( )A. <img src="https://tihai-oss-cloud.itihey.com/img/9227495911f861f8514e5f879e529767.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e6b520df6368f28aafe78097f88b672e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ec2330618de19073ad6a4e68ee7f4d42.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/6ed41dd3796ef3956bdd03101d47a3d6.png">
题目5单选题
设<img src="https://tihai-oss-cloud.itihey.com/img/a713b51ea3a6b4aaac47146015fc102a.png">为任意两个事件,则下列关系式成立的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/ac169508b2b0a70cb8dd2f6e3083c774.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/df4687539909f2a4267a9bc35203df86.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d01369ab3f9fa32ac7e5dc2bdc2f9145.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/95b35ba1cea83983266d2a715678e478.png">
题目6单选题
已知5个人进行不放回抽签测试,袋中5道试题(3道易题,2道难题),问第3个人抽中易题的概率是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/dd7d2ffc881038f1755cd32e9355e227.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/5fcc71251d5989ec7ad2d49b75c4330e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ce67a91c4f2d8f634d9daeb17db8e313.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2c955348d3c111e6a52688da77567ac6.png">
题目7单选题
袋中有5个球(3个新的,2个旧的),现每次取一个,无放回地抽取两次,则第二次取到新球的概率为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/dd7d2ffc881038f1755cd32e9355e227.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/5fcc71251d5989ec7ad2d49b75c4330e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ce67a91c4f2d8f634d9daeb17db8e313.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2c955348d3c111e6a52688da77567ac6.png">
题目8单选题
<img src="https://tihai-oss-cloud.itihey.com/img/a713b51ea3a6b4aaac47146015fc102a.png">为相互独立的事件,<img src="https://tihai-oss-cloud.itihey.com/img/435a5169ad767a9afbaac3acefbc4e82.png">,<img src="https://tihai-oss-cloud.itihey.com/img/2ef7c2ebf5c3f0160f9437ffc82a4cdb.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/6e59a26860b325fa844a26689b526b9f.png">( )A. 0.5B. 0.6C. 0.7D. 0.8
题目9单选题
某人射击时,中靶的概率为3/4,如果射击直到中靶为止,则射击次数为3的概率为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/45c8d97e76a075e5abda2d8942ac57e6.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/0f0c8f8e8258d6fa3604023351d50c40.png">× <img src="https://tihai-oss-cloud.itihey.com/img/8449e359608d7afc9ecfbad3360c6c31.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/c2c21fd2b919cb8322d457ffab46f68f.png">×3/4D. <img src="https://tihai-oss-cloud.itihey.com/img/5c2d825761a30a0efa0c6dbdce4dfd6a.png">
题目10单选题
<img src="https://tihai-oss-cloud.itihey.com/img/ceffbb1e839cbf6cb981826ed83d4141.png">A. 0.5B. 0.4C. 0.6D. 0.3
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