[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f7_FLdX0k_SwjT3kDPJ197rXYR2PKFWM_rCJhdLO9290":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":25,"type":26},[],"2025-10-03 10:52:49",219442647,[8,9,10,11,12],"1与1","1与0","不能确定","0与0","0与1",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},21,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","exam_167173247","第四章 二项分布和泊松分布","标准正态分布的均数与标准差分别为()(5.0)",[22,27,37,47,57,67,77,87,97,107],{"answer":23,"createTime":5,"id":6,"options":24,"question":20,"source":25,"type":26},[],[8,9,10,11,12],"v1",0,{"answer":28,"createTime":5,"id":29,"options":30,"question":36,"source":25,"type":26},[],219442648,[31,32,33,34,35],"右偏态","对称","近似正态","左偏态","正态","对数正态分布是一种()分布(说明:设X变量经Y=lgX变换后服从正态分布,问X变量属于何种分布)(5.0)",{"answer":38,"createTime":5,"id":39,"options":40,"question":46,"source":25,"type":26},[],219442649,[41,42,43,44,45],"n 固定时,π 越远离 0.5,分布越对称","只有均值决定形态","n 固定时,π 越接近 0.5,分布越对称","n 越小,分布越对称","n、π 不影响分布形态","下列关于二项分布形态的说法,正确的是",{"answer":48,"createTime":5,"id":49,"options":50,"question":56,"source":25,"type":26},[],219442650,[51,52,53,54,55],"1 个(π)","2 个(n 和 π)","2 个(均值 μ 和方差 σ²)","3 个(n、π 和均值 μ)","1 个(n)","二项分布的核心参数有几个",{"answer":58,"createTime":5,"id":59,"options":60,"question":66,"source":25,"type":26},[],219442651,[61,62,63,64,65],"样本容量","总体均值,且等于方差","成功概率 π","样本方差","试验次数 n","泊松分布中,参数 λ 的意义是?(5.0)",{"answer":68,"createTime":5,"id":69,"options":70,"question":76,"source":25,"type":26},[],219442652,[71,72,73,74,75],"两个泊松分布相加为正态分布","两个泊松分布相加仍是泊松,均值为 λ1×λ2","两个泊松分布相加为二项分布","两个泊松分布相加仍是泊松,均值为 λ1+λ2","只有 λ 相等时才可加","关于泊松分布的可加性,下列说法正确的是?(5.0)",{"answer":78,"createTime":5,"id":79,"options":80,"question":86,"source":25,"type":26},[],219442653,[81,82,83,84,85],"一个城市所有居民的身高","高考成绩的分布","社区内新冠传播病例数(会相互影响)","医院每天接诊的急性心梗人数(较少且稀有事件)","投掷硬币 10 次得到正面的次数","下列哪一情形可以用泊松分布建模?(5.0)",{"answer":88,"createTime":5,"id":89,"options":90,"question":96,"source":25,"type":26},[],219442654,[91,92,93,94,95],"μ越大","σ越小","μ越小","σ越大","μ越大,σ越大","随机变量X~N(μ,σ),下面哪一项可使其正态分布曲线的形状越"肥胖"()(5.0)",{"answer":98,"createTime":5,"id":99,"options":100,"question":106,"source":25,"type":26},[],219442655,[101,102,103,104,105],"正偏态分布","负偏态分布","左偏态分布","对称分布","正态分布","某病住院日的频数分布呈单峰分布.平均住院日为10日,中位数为5日,可以看出住院日的分布是()(5.0)",{"answer":108,"createTime":5,"id":109,"options":110,"question":116,"source":25,"type":26},[],219442656,[111,112,113,114,115],">-1.645s",">P5","<P95","±1.96s","<+1.645s","在制定正常成人肺活量95%的参考值范围时,宜采用界值为()(5.0)"]