Yes, looking back at this, I should have just said that on average, if someone dies with a probability of 1/1000, then he will live 999 years and die in the 1000th. And then I should have linked him the “Expectation” section of the Wikipedia page of the negative binomial distribution.
Yes, looking back at this, I should have just said that on average, if someone dies with a probability of 1/1000, then he will live 999 years and die in the 1000th. And then I should have linked him the “Expectation” section of the Wikipedia page of the negative binomial distribution.