In order to determine the validity of a prostate specific antigen (PSA) screening test, a sample of 1,850 men was assembled, of whom 65 had prostate cancer and 1,785 were prostate cancer free. Below are results of the screening test. What is the sensitivity of this test? Prostate Cancer PSA Test Result Present Not Present Positive 50 75 Negative 15 1,710 Question 21 options: 17.6% 76.9% 87.0% 77.4%