Steven has 1/3 of a package of biscuit mix left. He will use equal parts of the leftover mix to make three batches of biscuits. If he uses all of the mix, what fraction of the original package will he use for each batch?​

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