The scale of a map is 1 centimeter to 25 kilometers. it is about 85 kilometers between two cities.

how many centimeters should separate them on the map?

(a)2 and 1/2 cm
(b)3cm
(c)3 and 1/2 cm
(d)4 cm

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