Part B: Although we typically think of sensitivity and specificity as it relates to tests, It can also be used to determine how well one method of measurement works compared to another. For example, we could see how accurate self-reported answers on a survey are in comparison to clinical measurements. Here is an example. A survey is conducted of 1000 patients asking them to state YES/NO to the following question: Are you obese? Then, clinical measurements of those same 1000 patients were taken to determine a clinical diagnosis of obesity. Results are shown in the table. Answer the questions. Show all formulas/calculations. Comparison of Clinical versus Self-Reported Obesity True Clinical Diagnosis Obese Not Obese Total Obese 275 50 325 Not Obese 75 500 675 Self-Report Total 350 650 1000 8. What is the true prevalence of obesity (clinically determined) in this population? 9. What is the prevalence of self-reported obesity in this population