[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$feU4Cm_JZmdQyfvmMLT0gCxvhVKZeYyiz9-u_wgcBHTA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":32,"type":33},[],"2024-04-22 11:04:10",139597427,[8,9,10,11,12],"均数的算术均数","样本均数的标准差","均数的几何均数","均数的中位数","总体标准误",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},10,"f5ddaa714c35a43015508af9f69dbd67","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4cc6c4c1610fb9478ff594e058efaea7.jpg","预防医学","work_34323399","《均数的抽样误差与总体均数的估计》练习题","某医生对30名高血脂患者的血糖进行了检测,得到空腹血糖的 S`X 为0.6 mmol\u002FL,该指标为",[22,34,37,47,57,67,77,87,97,107],{"answer":23,"createTime":5,"id":24,"options":25,"question":31,"source":32,"type":33},[],139597426,[26,27,28,29,30],"描述样本均数的变异程度","衡量均数抽样误差的大小","可用于区间估计","可用于假设检验","可用于医学参考值范围估计","下列关于均数标准误的说法,错误的是","v1",0,{"answer":35,"createTime":5,"id":6,"options":36,"question":20,"source":32,"type":33},[],[8,9,10,11,12],{"answer":38,"createTime":5,"id":39,"options":40,"question":46,"source":32,"type":33},[],139597428,[41,42,43,44,45],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F07b17f9b94a4e1cd0436f6f92d5e5ce5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdd44767982afd0cf9f0d48f9a52aa2fc.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0b9bdf186090c8a29e1c2dcb9547bc10.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8005d4d8b18daf431b90579ceef5938b.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F92d332d85f6908a84c00ec01e48fb367.png\">","某医生调查了某地区200名参加体检的正常成年人,测得空腹血糖为5.5 ±0.6 mmol\u002FL. 那么该地成年人空腹血糖均数可以用下列哪一公式来估计",{"answer":48,"createTime":5,"id":49,"options":50,"question":56,"source":32,"type":33},[],139597429,[51,52,53,54,55],"减小系统误差","减小标准差","控制偏倚","适当增加样本量","将个体变异控制在一定范围内","要减少抽样误差,通常的做法是",{"answer":58,"createTime":5,"id":59,"options":60,"question":66,"source":32,"type":33},[],139597430,[61,62,63,64,65],"观察个体的变异越小","观察个体的变异越大","抽样误差越大","由样本均数估计总体均数的可靠性越小","由样本均数估计总体均数的可靠性越大","样本均数的标准误越小,说明",{"answer":68,"createTime":5,"id":69,"options":70,"question":76,"source":32,"type":33},[],139597431,[71,72,73,74,75],"个体不是随机抽取","测量不准确","个体变异","资料不是正态分布","统计指标选择不当","抽样误差产生的原因是",{"answer":78,"createTime":5,"id":79,"options":80,"question":86,"source":32,"type":33},[],139597432,[81,82,83,84,85],"估计总体中有95%的观察值在此范围内","总体均数在该区间的概率为95%","样本中有95%的观察值在此范围内","该区间包含样本均数的可能性为95%","该区间包含总体均数的可能性为95%","根据样本资料算的健康成人白细胞计数的95%可信区间为7.2×10^9\u002FL ~ 9.1×10^9\u002FL,其含义是",{"answer":88,"createTime":5,"id":89,"options":90,"question":96,"source":32,"type":33},[],139597433,[91,92,93,94,95],"3.64±1.96×1.20","3.64±1.20","3.64±1.96×1.20\u002F√200","3.64±2.58×1.20\u002F√200","3.64±2.58×1.20","某地抽取正常成人200名,测得其血清胆固醇的均数为3.64mmol\u002FL,标准差为1.20mmol\u002FL,则该地正常成人血清胆固醇均数95%的可信区间为",{"answer":98,"createTime":5,"id":99,"options":100,"question":106,"source":32,"type":33},[],139597434,[101,102,103,104,105],"t 分布是一条以 0 为中心,左右分布对称的曲线","自由度一定时,t 值越大,对应的P值越小","概率P一定时,自由度越大,t 值越小","自由度无穷大时,t 分布变为标准正态分布","自由度一定时,双侧0.05概率与单侧0.025概率对应的 t 值是相同的","下列 t 分布的说法,错误的是",{"answer":108,"createTime":5,"id":109,"options":110,"question":116,"source":32,"type":33},[],139597435,[111,112,113,114,115],"样本均数可信区间越窄","样本均数可信区间越宽","总体均数可信区间越窄","总体均数可信区间越宽","总体均数可信区间不变","可信度1-α 越大,则"]