一、生活中的小概率事件概率论中把发生的概率很小 (通常不超过 5 % )的事件称做小概率事件 .一个事件如果发生的概率很小 ,那么它在一次试验中几乎是不会发生的 ,数学上称这个结论为小概率事件原理 .在现实生活中经常涉及到各种小概率事件 .请看下列实例 .一个零件 ,正品率要 A small probability event in life Probability theory in the probability of a small (usually not more than 5%) event is called a small probability event.If the probability of an event is small, then it is almost not in a trial Will happen, this conclusion is mathematically described as the principle of small probability events. In real life often involve a variety of small probability events. See the following example. A part, genuine rate