A250 ml bottle of water treatment liquid will treat up to 625 litres of water. given that 1 cubic meter=1000 litres, how much treatment liquid is needed to treat a water tank of 2, 240 litres when full many

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