I have the following questions.

The number of episodes per year of obtaining a certain disease follows poisson distribution has

**Find the probability of 3 or more episodes occuring over 2 years.**
I have

.

Happy with that.

Find the probability of not getting any episodes of the disease in a certain year

so

Also happy with that.

**What is the probability that 2 siblings will both have 3 or more episodes in the first to years?**
Is this binomial given p = 0.62 finding P(X=2)? but what would n be?

Or is it still poisson? maybe a different

Thx!