c) A doctor recommended that a patient with a specific symptom be tested for a particular disease. The only evidence the doctor has before the test results are available is that 10% of people with this symptom have the disease. Experience has shown that this test reveals that 99% of people with the disease have the disease. The test also reveals that 95% of people who do not have the disease haven’t the disease. If the test reveals the presence of the disease what is the actual probability that the patient has the disease?