Which of the following is NOT a precondition of two independent sample t test?
A、Individualsarerandomlyselected.;
B、Thetwogroupsareindependent.;
C、Thetwopopulationmeansaredifferent.;
D、Thetwopopulationvariancesarethesame.;
E、Thetwopopulationsbothfollownormaldistributions.
发布时间：2025-12-06 14:54:06
