论文部分内容阅读
参考公式:如果事件A,B互斥,那么P(A+B)=P(A)+P(B);如果事件A,B相互独立,那么P(A·B)=P(A)·P(B);如果事件A在一次试验中发生的概率是p,那么n次独立重复试验中事件A恰好发生k次的概率为
If the events A and B are mutually exclusive, then P (A · B) = P (A) + P (B); P (B); if the probability that event A occurs in one experiment is p, the probability that event A happens to occur k times in n independent experiments is