At the corner market, you can buy rice by
the pound. The table below shows some
weights and their corresponding costs.
Rice (lbs) Cost ($)
11
10
13
88
a
How much does 13 pounds of rice cost?

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