positive binomial distribution

例句：

1. 1. The probabilityof a coin landing heads up is thesame as the probability of a coin landingtails up, which is the positivebinomial distribution.
   硬币正面朝上的概率与硬币反面朝上的概率相同，这是正二项分布。
2. 2. In statistics, the positive binomial distribution isused to model the number of successesin a sequence of independent trials.
   在统计学中，正二项分布用于模拟一系列独立试验中的成功次数。
3. 3. The positivebinomial distribution can be used toestimate the expected number of successes ina given time period, given the numberof trials and the probability of success pertrial.
   正二项分布可以用来估计给定时间周期内预期的成功次数，前提是知道试验次数和每次试验成功的概率。