同一资料进行厂和b的假设检验时

A、t[img=~/QImg/2013-10-14-11-12-39/image018.jpg]>t[img=~/QImg/2013-10-14-11-12-39/image019.jpg]
B、t[img=~/QImg/2013-10-14-11-12-39/image018.jpg]C、t[img=~/QImg/2013-10-14-11-12-39/image018.jpg]=t[img=~/QImg/2013-10-14-11-12-39/image019.jpg]
D、二者无确定关系
E、以上都不对