证明一组数据的分布是否具有正态性的检验方法为()
A.两独立样本比较的t检验
B.u检验
C.方差齐性检验
D.t检验
E.正态性检验
参考答案:E
It is reported that very little use of these waste materials_______ in the past decades.
A.was taken
B.was made
C.has been made
D.has been taken
库存控制管理的定量订货法中,订货点的选取与以下哪些因素有关()
A.只与物资的需求速率有关
B.只与订货周期有关
C.只与库存满足率有关
D.与需求率、订货周期和库存满足率都有关