A test is used to screen 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...

A test is used to screen 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.

• Calculate the number of true positives


• Calculate the number of false positives

Extracted text: Disease present Disease absent Positive test a= true positive b= false positive Negative test c= false negative d= true negative