You are trying to exam the effects of a medication. You have 1000 patients that are going to be examined for this and to see who ends up with the severe effects. The probability of patients having the severe effects is .2 or 20%.

1) What is the probability that has exactly 200 people have severe effects?

2) What is the probability that there would be more than 200 people with severe effects?

3) What is the probability that there would be at most 200 people with severe effects?