Homework Help: Math

Posted by Aliciamimi on Wednesday, April 27, 2011 at 4:54pm.

I have a math problem i need help with. Thank you.

Problem:
let's say there is a 15% chance of getting strep if you are exposed to a person with strep. Let’s say there is a 50% chance that you were exposed.
a) What is the probability that
you will get strep?

b) Let’s say each person in your (4-person) family had a 50% chance of being exposed. What is the probability that you will get strep?

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