B Screening and Specificity A lost is used to scroon people for hepatitis B. The sensitivity of the test is 95% and the specificity of the test is 90%. Assume that the total number of persons being tested for hepatitis B is 50,000. Assume that the true prevalence of hepatitis B in the population is 100 per 50,000. (5 pis) Disease present Disease absent Positive test as true positive b= false positive Negative test o- false negative de true negative 1) Calculate the number of true positives 2) Calculate the number of false positives