[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwNi2d8FAx6LRLSDcI48O5jrnIugGrJ_xdKVY22PnhCk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":27,"type":34},[],"2023-06-19 22:16:25",72924196,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},7,"0251d986ada4b85baf4547c256124a5f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F970f017ca4b56ace4d3d9eec7d573e6c.jpg","概率论与数理统计B","work_26116685","作业1.3","在一个盒中装有15个乒乓球,其中有9个新球,在第一次比赛中任意取出3个球,比赛后放回原盒中;第二次比赛同样任意取出3个球,求第二次取出的3个球均为新球的概率 .(保留3位小数)",[17,29,35,40,45,48,53],{"answer":18,"createTime":19,"id":20,"options":21,"question":26,"source":27,"type":28},[],"2023-06-19 22:13:59",72915303,[22,23,24,25],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F53592c0c81667ada9362ae26b0d09b05.png\">与 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc2b6d58f7be0b556479b31768ad23e20.png\">互斥(互不相容)","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F369f490e0be5311dcd7ae106c4330c1e.png\"> 或\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe890f6b4a6bb8db181d12df1a522527c.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2e8f29bb5a2d896b1e734d6dfc737bef.png\">与 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc2b6d58f7be0b556479b31768ad23e20.png\">同时出现是不可能事件","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1863ea92a873358e8681bc5149e60c23.png\"> 则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3fd37e847736c1b827f38daa44dee2c6.png\">","若事件\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc04d2880d13d05c95bf8e410f259873c.png\"> 、\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F1926107f6a51699fe58355b93db53630.png\"> 适合\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe23773a464e1a7a84e41c3b5a76fd62d.png\"> 则以下说法正确的是( )","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":27,"type":34},[],72924193,[],"已知P(A)=0.2,P(A|B)=0.3,P(B|A)=0.4,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcf71e3857d5e5d1c22c8a85b41acc9ae.png\">____.(保留2位小数)",2,{"answer":36,"createTime":5,"id":37,"options":38,"question":39,"source":27,"type":34},[],72924194,[],"袋中有6只白球,5只红球,每次在袋中任取1只.若取得白球,放回,并放入1只白球;若取得红球不放回也不再放入另外的球.连续取球4次,求第一、二次取得白球且第三、四次取得红球的概率 .(保留3位小数)",{"answer":41,"createTime":5,"id":42,"options":43,"question":44,"source":27,"type":34},[],72924195,[],"猎手在距猎物10米处开枪,击中概率为0.6.若击不中,待开第二枪时猎物已逃至30米远处,此时击中概率为0.25,若再击不中,则猎物已逃至50米远处,此时只有0.1的击中概率.求猎手三枪内击中猎物的概率 .(保留2位小数)",{"answer":46,"createTime":5,"id":6,"options":47,"question":15,"source":27,"type":34},[],[],{"answer":49,"createTime":5,"id":50,"options":51,"question":52,"source":27,"type":34},[],72924197,[],"有两个袋子.甲袋中有5个白球和7个黑球;乙袋中有3个白球和12个黑球.抽编号为1,2,3的卡片.抽到1号、3号卡片向甲袋中摸1个球,抽到2号卡片向乙袋中摸1个球,则摸到白球的概率为____.(保留3位小数)",{"answer":54,"createTime":5,"id":55,"options":56,"question":57,"source":27,"type":34},[],72924198,[],"已知5%的男人和0.25%的女人是色盲,现随机地挑选一人,此人恰为色盲,问此人是男人的概率 (假设男人和女人各占人数的一半.保留3位小数)"]