The specific test they use has a false positive rate of 2% and a false negative rate of 1%. Suppose that 5% of all their applicants are actually using illegal drugs and we randomly select an applicant. Given the applicant tests positive, what is the probability that they are actually on drugs? So let's work through this together. So first, let's just make sure we understand what they're telling us. So there is this drug test for the job applicants and then the test has a false positive rate of 2%. What does that mean?