1. While looking at a person's chickenpox in 2021, it turns out that 1% of people in the world are affected. Consider a group of 20 people. (20 points) a) Write down the random variable in this problem {2 points) b) How is this a binomial experiment? (3 points} c) Find none of them have chickenpox (3 points} d) Find 10 of them have chickenpox (3 points} e) At most 4 of them have chickenpox {3 points) 1') At least 5 of them have chickenpox (3 points}. g} In Africa, four people out of twenty have chickenpox. Is this expected? Did you see any statistical evidence? (3 points)