Joseph is building a doghouse. He wants it to be a replica of his house, but smaller. his house is 18 feet tall. He needs the doghouse to be between 3-4 feetl tall. Therefore, the doghouse should be what percentage of the size of his house?

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