Quote Originally Posted by Arfur Europe View Post
I'm glad you said that Mrs R. Because I have this question that's always been bugging me.
Pretend 1% of the population has a disease. You have a test that determines if you have that disease, but it’s only 80% accurate and 20% of the time you get a false positive. Your test comes back positive. How likely is it you have the disease?
Blimey! What disease has she got?