A.顯著高 B.不顯著高 C.等 D.低
A.X-1.96SE<XT≤X+1.96SE B.X-1.96SE≥XT C.X+1.96SE≤XT D.X-1.96SE≌XT≌X+1.96SE
A.rxx<0.70 B.0.70≤rxx<0.85 C.rxx≥0.85 D.rxx=1.00