(adsbygoogle = window.adsbygoogle || []).push({}); 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???

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# This is simple for you, hard for me

**Physics Forums | Science Articles, Homework Help, Discussion**