(完整版)假设检验习题及答案

relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。第三章假设检验3.2一种元件,要求其使用寿命不低于1000（小时）,现在从一批这种元件中随机抽取25件,测得其寿命平均值为950（小时）。已知这种元件寿命服从标准差100（小时）的正态分布，试在显著水平0.05下确定这批元件是否合格。0100001:1000,H:1000Xu=950100n=251000950-1000u=2.510025V=u0.05Hnxu提出假设：构造统计量：此问题情形属于u检验，故用统计量：此题中：代入上式得：拒绝域：本题中：0.950.950u1.64u0.0uH即，拒绝原假设认为在置信水平5下这批元件不合格。3.4某批矿砂的五个样品中镍含量经测定为（%）：3.253.273.243.263.24设测定值服从正态分布，问在0.01下能否接受假设，这批矿砂的镍含量为01011020:3.25H:tXt=13.252,S=0.0117,n=53.252-3.25t=0.34190.011751HSnx提出假设：构造统计量：本题属于未知的情形，可用检验，即取检验统计量为：本题中，代入上式得：否定域为：1-20.995120V=tt(1)0.01,(4)4.6041,3.25ntttH本题中，接受认为这批矿砂的镍含量为。relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledge(1)--lineandanglereviewcontentline,andsegment,andRay,andvertical,andparallel,andangleangleofclassification(slightly)17,andsubject:geometrypreliminaryknowledge(2)--planegraphicsreviewcontenttriangle,andedgesshaped,andround,andfanaxisymmetricgraphicsperimeterandareacombinationgraphicsofareasubject:Preliminaryknowledge(3)-reviewofsolidcontentcategory1-dshapesaredividedinto:cylinderandcone2,columnisdividedinto:cuboid,square3,coneconeofthefeaturesofcuboidsandcubesrelationshipbetweencharacteristicsofcircularconeisslightlysolidsurfaceareaandvolume1,size2,table...和和平与发展是当今世界发展的主题，中国作为屹立在世界东方的大国，要担负起重要的责任。从“亚太自由贸易区”到“亚投行”、“一带一路”，再到G20峰会，都体现出中国一个负责任的大国形象。3.5确定某种溶液中的水分，它的10个测定值0.452%,0.035%,XS2N(,),设总体为正态分布试在水平5%检验假设：0101()H:0.5%H:0.5%()H:0.04%H:0.0.4%iii00.95()10.452%S=0.035%-4.1143(1)0.05n=10t(9)1.833itSnXn1-构造统计量：本文中未知，可用检验。取检验统计量为Xt=本题中，代入上式得：0.452%-0.5%t=0.035%10-1拒绝域为：V=tt本题中，014.1143Ht拒绝22200222212210.952()nSS0.035%n=100.04%100.035%7.65630.04%V=(1)(1)(9)16.919iinn2构造统计量：未知，可选择统计量本题中，代入上式得：（）（）否定域为：本题中，210(1)nH接受3.9设总体116(,4),,,XNXX为样本，考虑如下检验问题：relationship,establishedequivalentrelationship14,andsubject:applicationproblem(4)--scoresandpercentageapplicationproblemreviewcontentoverviewanswersscores,andpercentageapplicationproblemofkeyis:accordingtomeaning,(1)determinestandardvolume(units1)(2)findassociatevolumeratecorrespondstorelationship,Thenin-linesolution.CategoryfractionmultiplicationwordproblemscoreDivisionapplicationsengineeringproblemproblemXV,asubject:reviewofthemeasurementoftheamountofcapacity,measurementandunitsofmeasurementofcommonunitsofmeasurementandtheirsignificanceinrate1,currency,length,area,volume,unitsize,volume,weightandrate.(Omitted)2,commonlyusedtimeunitsandtheirrelationships.(Slightly)withameasurementunitsZhijianofofpoly1,andofmethod2,andpolymethod3,andofmethodandpolymethodofrelationshipmeasurementdistanceofmethod1,andtoolmeasurement2,andestimates16,andsubject:geometrypreliminaryknowledg