14. suppose that 1 out of every 10,000 doctors in a certain region is infected with the sars virus; in the same region, 20 out of every 100 people in a particular at-risk population also are infected with the virus. a test for the virus gives a positive result in 99% of those who are infected and in 1% of those who are not infected. a randomly selected doctor and a randomly selected person in the at-risk population in this region both test positive for the disease. who is more likely to actually have the disease?