标准差未知计量抽样和分层计量抽样推定区间上限值与下限值系数(正式)(共8页).doc

精选优质文档-倾情为你奉上标准差未知时计量抽样和分层计量抽样推定区间上限值与下限值系数样本容量n0.5分位值0.05分位值k（0.05）k（0.10）k1（0.05）k2（0.05）k1（0.10）k2（0.10）50.953390.685670.817784.202680.982183.3998360.822640.602530.874773.707681.028223.0918870.734450.544180.920373.399471.065162.8938080.669830.500250.958033.187291.095702.7542890.619850.465610.989873.031241.121532.64990100.579680.437351.017302.910961.143782.56837110.546480.41373