依排列组合,可得概率分布表为:
P(X=0) = C10 96 / C10 100 = 0.65163;
P(X=1) = (C1 4 * C9 96)/C10 100 = 0.29960
P(X=2) = (C2 4 * C8 96)/C10 100 = 0.045961
P(X=3) = (C3 4 * C7 96)/C10 100 = 0.0027542
P(X=4) = (C4 4 * C6 96)/C10 100 = 0.000053555
如果你想知道概率分布函数,请参考下表:
F(X