binomial waiting time distribution

例句：

1. 1. The binomial distribution is used to model the probability of success in a binary experiment.
   二项式分布用于模拟二元实验中成功的概率。
2. 2.In binomial sampling, each observation is independent and has a fixed probability of success or failure.
   在二项抽样中，每个观察结果都是独立的，具有固定的成功或失败概率。
3. 3. The binomial distribution is often used in statistical models to account for the uncertainty in estimates.
   二项分布常用于统计模型中，以处理估计的不确定性。