Acircular plate has a diameter of 6 inches.
what is the exact area of the plate?
a. 3pi square inches
b. 36pi square inches
c. 6pi square inches
d. 9pi square inches

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