OK, you got them all. Here’s another for the general klal to answer (I request Dr. Pepper to wait a bit).
Hug-a-Rug Drug Company has just gotten FDA approval for a new medical test to determine if a person is allergic to carpet fibers. One in seventy people in the general population are allergic to carpet fibers. In the clinical trial, 1,000 subjects were tested, of which 500 were known to be allergic and 500 were known to not be allergic. The test results were as follows:
460 of the allergic people tested positive (true positive)
10 of the non-allergic people tested positive (false positive)
490 of the non-allergic people tested negative (true negative)
40 of the allergic people tested negative (false negative)
Samuel E. Hutchueson, a.k.a. Sam “Sneezy” is the first person to be tested outside the clinical trial. His test results are positive. How certain are we that ole’ Sneezy is allergic to carpet fiber?