Use tree diagram to present the given information b. Find the probability that a randomly selected patient has the disease and tests positive.

A hospital is testing patients for a certain disease. If a patient has the disease, the test is designed to return a "positive" result. If a patient does not have the disease, the test should return a "negative" result. No test is perfect though. • 99 percent of patients who have the disease will test positive. • 5 percent of patients who don't have the disease will also test positive. • 10 percent of the population in question has the disease. a. Use tree diagram to present the given information b. Find the probability that a randomly selected patient has the disease and tests positive.