Consider the following statement: Not everyone is good at sports. For the following questions, Let the universe of discourse be the set of all people. P(x) be the predicate x is good at sports. Write the statement as a universal statement
A. Vx ~P(x)
B. Vx ~ P(x)
C.~ 3x ~P(x)
D. ~ (VxP(x))

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297