计算检验统计量宜用公式

A、[img=~/QImg/2013-10-14-11-38-02/image050.gif]
B、[img=~/QImg/2013-10-14-11-38-02/image051.gif]
C、[img=~/QImg/2013-10-14-11-38-02/image052.gif]
D、[img=~/QImg/2013-10-14-11-38-02/image053.gif]
E、[img=~/QImg/2013-10-14-11-38-02/image054.gif]