4. Let A be some event/disease/thing you want to know about, and let \"pos\" mean test positive for A. Show that P(pos|A) 2 P(pos|AC) LR := P(pos|A)/P(pos|AC) Z 1 > P(A|pos)/P(AC|pos) Z P(A)/P(AC), i.e., the posterior odds are higher than the prior odds