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src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8392a736fd12a03118bdad9f413ac198.png\">,则随着\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F36eb83eb18325d71c6030c7d63bcd0ed.png\">的增大,概率\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F441249a69ec230f67cbeed3947f334c9.png\">( )","v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":35,"source":25,"type":26},[],272386803,[31,32,33,34],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4269124c35ce1c39f35f80d51660e118.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F549682ea2714c9bb5fd3fd873833725f.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff58f2c436ab57ef86ebe25d66570dc66.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa3943776e5c67190940230fb485ac6a7.png\">","若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5dced5d2ad3e9e8e3dca5a553ab261d7.png\">是来自总体\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2132541515be970ddba26b9088d28c87.png\">的一个样本,\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdf1fe71369b6bd13d920a6b984762e33.png\">,则以下估计量中最有效的是( )",{"answer":37,"createTime":5,"id":38,"options":39,"question":44,"source":25,"type":26},[],272386804,[40,41,42,43],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4926a32528db9d122648a38b508b52a4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F21fd2e2dbe9d9877f08760a3f00c38cd.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa4940c6be6dd0397961093af3fba2d20.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6ea53902f68a7558650dde673d0410ac.png\">","设随机变量\u003Cimg 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src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3aea19c43c32f872b117e753d10db8cf.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8c6b61a459bad1a4940cffb701a0b831.png\">",""A发生且B不发生"这一事件可表示为( )",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":25,"type":26},[],272386807,[64,65,66,67],"独立同分布","不独立也不同分布","独立不同分布","不独立同分布","若随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4326640c11c62041aedc99c2c633c477.png\">的联合密度函数为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd9a0d90686dab143a9e6b2c4bc9b410a.png\">则随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2132541515be970ddba26b9088d28c87.png\">与\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8e91220243d19401df4bef0bc5b82d4.png\">( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":25,"type":26},[],272386808,[73,74,75,76],"服从\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F865a70b6230b867a64857e8ad844cee8.png\">","服从\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7ed828d5180153816d54b7ecfa6f4f7c.png\">","不一定服从正态分布","服从\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F35ca813ac837440daff6d04ff8cd58a9.png\">","若\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2132541515be970ddba26b9088d28c87.png\">与\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff8e91220243d19401df4bef0bc5b82d4.png\">相互独立且均服从标准正态分布,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbbe9a2144d673d5cf626317e7ad4001c.png\">( )",{"answer":79,"createTime":5,"id":80,"options":81,"question":86,"source":25,"type":26},[],272386809,[82,83,84,85],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F742ec2787daf5f26bdb56df269a7d6b1.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fce04680e245c92c65c0dcd34c6264fae.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbaabf9d543e47ceedfc4183d4b41a376.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8b66bac0f09b1585f781855cfde96da5.png\">","设随机变量\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2132541515be970ddba26b9088d28c87.png\">的密度函数为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5ca90570422e2a51d56f9a0de7df9732.png\">(\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F47f4e1c854611c0e8508eaa00a1f3a51.png\">),则常数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5f4e2bb9a20b67e98fe787cab962a1ba.png\">( 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