检验假设H[img=~/QImg/2013-10-14-11-38-02/image039.gif]应为

A、三组样本均数相等
B、三组总体均数相等
C、SS[img=~/QImg/2013-10-14-11-38-02/image040.gif]=SS[img=~/QImg/2013-10-14-11-38-02/image041.gif]+SS[img=~/QImg/2013-10-14-11-38-02/image042.gif]
D、SS[img=~/QImg/2013-10-14-11-38-02/image041.gif]=SS[img=~/QImg/2013-10-14-11-38-02/image042.gif]
E、MS[img=~/QImg/2013-10-14-11-38-02/image042.gif]=MS[img=~/QImg/2013-10-14-11-38-02/image041.gif]