Ian picked 1/10 of a bucket of apples, and Sam picked 7/10 of a bucket of apples. How many more buckets did Sam pick? a:4/5
b:3/5
c:6/5
d:8/20

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