[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fiOTSv-Bv3CfyP2l36io_NNuZcCEycdVuyVGhZSlCcCo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2024-05-06 12:44:43",141624890,[8,9,10,11],"当备择假设正确时未拒绝备择假设","当备择假设不正确时拒绝备择假设","当原假设错误时拒绝原假设","当原假设正确时拒绝原假设",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},23,"20c9b1847fb4f9af7c3c9330ce303c6c","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcfe94bcc60859bdd400cc15d3cc9e024.jpg","一起学统计","work_34755308","假设检验","在假设检验中,第Ⅰ类错误是指( )",[21,33,42,51,54,64,73,80,90,99],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2024-05-08 16:02:28",141624887,[26,27,28,29],"H0:&mu;&le;7, H1:&mu;&gt;7","H0:&mu;&ge;7, H1:&mu;&lt;7","H0:&mu;&ge;8, H1:&mu;&lt;8","H0:&mu;&le;8, H1:&mu;&gt;8","一项新的减肥计划声称:在计划实施的第一周内,参加者的体重平均至少减轻8磅.随机抽取40名参加该项计划的样本,结果显示:样本的体重平均减少7磅,标准差为3.2磅,则其原假设和备择假设是","v1",0,{"answer":34,"createTime":5,"id":35,"options":36,"question":41,"source":31,"type":32},[],141624888,[37,38,39,40],"没有充足的理由否定原假设","没有充足的理由否定备择假设","可以放心地接受原假设","备择假设是错误的","当样本统计量的取值未落入原假设的拒绝域时,表示( )",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],141624889,[46,47,48,49],"两总体为正态分布,方差已知","两总体非正态分布,方差未知","两总体为正态分布,方差未知","两总体非正态分布,方差已知","比较两个总体均值是否相同的假设检验中,采用 t 检验的条件是( )",{"answer":52,"createTime":5,"id":6,"options":53,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":55,"createTime":56,"id":57,"options":58,"question":63,"source":31,"type":32},[],"2024-05-08 13:16:27",141624891,[59,60,61,62],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3ad423d0acbed22e6467fc6ea39887b4.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0db9b1d56d8e3e9e34bdae9ca2cce866.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd3f674e3ee4509e986cab4b71ce19d38.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F15aa41771028b5ac671619cf8b91feb4.png\">","要检验的假设为H0:&mu;=&mu;0,H1:&mu;&ne;&mu;0,则拒绝域为",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":31,"type":32},[],141624892,[68,69,70,71],"P&lt; &alpha;","P= &alpha;","P&gt; &alpha;","P= &alpha;=0","对于给定的显著性水平&alpha;,根据P值拒绝原假设的准则是( )",{"answer":74,"createTime":56,"id":75,"options":76,"question":79,"source":31,"type":32},[],141624893,[11,77,78,9],"当原假设错误时未拒绝原假设","当备择假设正确时为拒绝备择假设","在假设检验中,第二类错误是指",{"answer":81,"createTime":82,"id":83,"options":84,"question":89,"source":31,"type":32},[],"2024-05-08 13:16:28",141624894,[85,86,87,88],"统计量","P值","临界值","事先给定的显著性水平","如果原假设H0为真,所得到的样本结果会像实际观测取值那么极端或更极端的概率称为( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":31,"type":32},[],141624895,[94,95,96,97],"原假设肯定是正确的","没有证据证明原假设是正确的","原假设肯定是错误的","没有证据证明原假设是错误的","在假设检验中,不拒绝原假设意味着( )",{"answer":100,"createTime":101,"id":102,"options":103,"question":108,"source":31,"type":32},[],"2024-05-08 13:16:26",142076630,[104,105,106,107],"-2.36","2.36","-3.33","3.33","随机抽取一个n=50的样本,计算得到样本均值为60,样本标准差为15,要检验H0:&mu;=65,H1:&mu;&ne;65,检验的统计量为"]