Serengeti National Park in northern Tanzania is home to the Masai lions. For the purpose of this question, let us assume that on average, a lioness gives birth to 2 cubs in a 1 year period.
1. What is the probability that in a 1 year period a lioness gives birth to exactly 2 cubs?
2. What is the probability that in a 1 year period a lioness does not give birth to any cubs?
3. How many cubs do you expect a lioness to give birth in a 3 year period?
4. What is the probability that in a 3 year period a lioness gives birth to at least 2 cubs?