本次研究的虚无假设是催眠对于儿童的牙科治疗结果并无影响。

Null hypothesis: Hypnosis has no effect on the outcome of dental treatment of children.

youdao

本次研究的虚无假设是催眠对于儿童的牙科治疗结果并无影响。

Null hypothesis: Hypnosis has no effect on the outcome of dental treatment of children.

youdao