Quote:
Originally Posted by GenYus234
In case anyone is wondering, testing 1,000 people would produce 51 positive tests, 50 false positives and 1 true positive. So if you tested positive, there is a 1/51 chance you are the true positive test.

It's not quite that simple since there's a 5% chance it will miss the true positive  I think that's a factor so that the actual answer comes out to exactly 2% though. (I can't be arsed to do the sums now but I've done them before...)