Suppose an illness that can affect 1% of the people. Also assume that there is a test for that illness, that gives the correct result 99% of the times.

If you take that test, and receive a POSITIVE result, should you worry much?

If you take it again, and once more get a POSITIVE, should you worry then?

How many consecutive POSITIVEs would you have to get in order to be sure that the chances of a wrong diagnostic are 1 in a million?

(In reply to re(3): solution by Kyle)

Comment deleted by poster.

 

 

 

 

Edited on May 8, 2008, 3:41 am

Posted by Penny on 2005-01-03 21:23:49