Intro to Statistics: 8.1 Tree Diagrams 1. A laboratory test for the detection of a certain disease gives a positive result 5 percent of the time for people who do not have the disease. The test gives a negative result 1 percent of the time for people who have the disease. Large-scale studies have shown that the disease occurs in about 2 percent of the population. What is the probability that a person selected at random would test positive for this disease? Show your work. Use Line 131