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Homework Help: math plz help

Posted by sajid on Friday, February 17, 2012 at 8:28pm.

On a cold winter day in February, many students in Ms. Bush's sixth-grade class had runny noses and sore throats. After examining each student, the school nurse constructed the following table.


Sore Throat No Sore Throat
Runny Nose 7 14
No Runny Nose 6 6


Find the probability that a randomly selected student has a runny nose or a sore throa

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