What is the equation of this circle? a. (x−7)2+(y+1)2=62 b. (x+7)2+(y+1)2=62 c. (x−7)2+(y−1)2=62 d. (x+7)2+(y−1)2=62

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