<prompt> A diagnostic test for a paicular disease has a sensitivity, of a 0.90 and a specificity of 0.80. A single test is applied to each subject in the population in which the diseased population is 30. What is the probability that a person, negative to this test, has no disease -Less than 50709572  <response>: Ans. is c i.e., 95 o The probability of not having a disease after a negative screening test is measured by negative predictive value. 