当p=0.6时，二项分布是正态的。()

未分类题This passage mainly tells us thatA．parents' love for their children is great.B．it is dangerous for parents to reunite with their children in a disaster.C．we should develop reasonable plans for disasters.D．the U. S. government has been well prepared for disasters.

判断题两个总体的分布形态，不会影响两独立样本t检验。()

判断题I类错误可能的原因是由于样本数据自身的误导性。()

未分类题According to the federal official, the decline of application for citizenship was caused byA．the increase of citizenship fee.B．unstable economy.C．various reasons.D．the upcoming revisions to the U. S. citizen test.

判断题因接受不同实验处理而造成各组间的差异是组间变异。()