Suppose that 99% of all steroid users get a positive test result, that the test yields a false positive result 4% of the time, and that 9% of the football team members at GSU do not in fact use steroids. Hugo Huge gets selected at random to be tested. Take E: The test gives a positive result. F: Hugo uses steroids.. doing the actual calculation, we need to sort out all the information we are given. QUIZ P(F)= Check Clear Peek P(E|F)= Check P(EF)= Check Clear Clear Peek Peek P(F)= P(EF= Check Clear Peek Check Clear Peek P(EF)= Check Clear Peek