1. Suppose a computerized database contains all charts of patients at nine hospitals in Cleveland, Ohio. one concern of the group conducting the study is the possibility that the attending physician underreports or overreports various diagnoses that seem consistent with a patient's chart. an investigator notes that 50 of th 10000 people in the database are reported as having a particular viral infection by their attending physician. a computer using an automated method of diagnosis claims that 68 of the 10000 people have the infection, 48 of them from the attending physician's 50 positives and 20 from the attending physician's 9950 negatives.
2. 
   
3. Test the hypothesis that the probability of detecting this viral infection is the same for the computer and the attending physician.

What statistical test should be used?