This is simple for you, hard for me.... I really need to know how to do a question like this for a course I am taking. Can you help???? Out of 2 million hay fever sufferers in Canada, 82% are allergic to ragweed. If a random sample of 7 hay fever sufferers is selected, a) what is the probability that 3 are allergic to ragweed? b) What is the probability that 1 is allergic to ragweed? What is the formula???