• 2022-06-01
    当df=15时,查t分布表得两尾概率等于0.01的临界t值为t0.01(15) =2.947,其意义是:
    A: P(-∞<t<-2.947)=
    P(2.947<t<+∞)=0.99
    B: P(-∞<t<-2.947)+
    (2.947<t<+∞)=0.01
    C: P(-∞<t<-2.947)=
    P(2.947<t<+∞)=0.01
    D: P(-2.947<t<2.947)=0.01