How did you get that number? Assuming a binomial distribution with p=1/10^7 and n=150*10^3 samples as the null model, the probability of 2 or more accidents hap

How did you get that number? Assuming a binomial distribution with p=1/10^7 and n=150*10^3 samples as the null model, the probability of 2 or more accidents happening by chance is 0.011%.