[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f__eZ41bqoakpfvZ12SfvmX24vM-xGhzGfzViJEMKD2M":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-06-11 23:33:35",58444257,[8,9,10,11],"随着样本量的增大而变小","随着样本量的增大而变大","与样本量的大小无关","大于总体标准差",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},40,"48f32170b04aa1c6ddc1b2048ded06ba","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb5a9724259740fd0248fd6da843b4f47.jpg","统计学2021-22-1,2 2022-2023-1,2","work_25278424","第7章作业.xls","样本均值的抽样标准差( )",[21,32,41,50,59,68,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],58444252,[25,26,27,28],"无偏性","有效性","一致性","充分性","在参数估计中,要求通过样本的统计量来估计总体参数,评价统计量的标准之一是使它与总体参数的离差越小越好.这种评价标准称为( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],58444253,[36,37,38,39],"以95%的概率包含总体均值","有5%的可能性包含总体均值","一定包含总体均值","要么包含总体均值,要么不包含总体均值","根据一个具体的样本求出总体均值的95%的置信区间( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],58444254,[45,46,47,48],"准确性","精确性","显著性","可靠性","置信系数\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F75d4cd4158927cb1c8991bddbf29900f.png\">表达了置信区间的( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],58444255,[54,55,56,57],"置信水平确定","统计量的抽样标准差确定","置信水平和统计量的抽样标准差确定","统计量的抽样方差确定","在总体均值和总体比例的区间估计中,边际误差由( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],58444256,[63,64,65,66],"正态分布","t分布","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0718855134dac8170d5de4ad0f2eb325.png\">分布","F分布","估计单个总体方差的置信区间时,使用的分布是( )",{"answer":69,"createTime":5,"id":6,"options":70,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],58444258,[75,76,77,78],"0.031","0.016","0.043","0.052","根据\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F2c2d6f4d905092ced7dc54a76c07667d.png\">的样本计算的样本比例的抽样标准差为( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],58444259,[84,85,86,87],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F724cde23706c5a2e269d9e4a3b419214.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff484a2df4f4086416228b09e88f62cc8.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbb5adaab2429555b89d7bc6555d2d630.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F297f1a71d365b6b0db51e925de787adf.png\">","在\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe481dda49ad4180e231aac4416b3cd4f.png\">的随机样本中,成功的比例为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F13097b20c1910b49b0ed5df0e28fe51f.png\">,总体比例\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb71b9137bca84b05ec976f35aa028200.png\">的95%的置信区间为( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],58444260,[93,94,95,96],"146","246","346","446","若边际误差\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F04b106dd1805824b03e1aa1c8b823733.png\">,要估计总体均值\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fed1f4d3c386f168f6dd71edf78235307.png\">的95%的置信区间所需的样本量为( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":104,"source":30,"type":31},[],58444261,[102,103],"用来估计总体参数的统计量的名称 C.总体参数的名称","用来估计总体参数的统计量的具体数值 D.总体参数的具体数值","估计量的含义是指( )"]