Case study for managerial epidemiology

1. Construct a 2-by2 contingency table to determine the total number of people who fail the screening test and will be referred for diagnostic testing in the hearing centers.2. Construct a 2-by-2 contingency table to determine the total number of people who fail the diagnostic test, which represents the target market for hearing aid sales.***For each table: list what data (and calculations) you used for the table3. Explain the significance of Sensitivity and Specificity of Portable audiology equipment and Clinic-based audiology equipment.4. Explain why Sensitivity and Specificity for the Clinic-based audiology equipment for follow-up diagnostic testing is higher than forPortable audiology equipment for a free screening.