Q4 2 Points Suppose that there is a test for diabetes. In the following table, it shows the testing results and true diabetes status of 200 patients. Based on the data in this table, what is the negative predictive value of this testing method? Have Diabetes Do Not Have Diabetes Row Total Test Positive 120 5 125 Test Negative 30 45 75 Column Total 150 50 200 O 0.2 O 0.4 O 0.6 O 0.8 Q5 2 Points For another test, suppose that the sensitivity is 0.5, and the positive predictive value is 0.6. If the marginal probability of testing positive is 0.4, what is the marginal probability that a person truly has the disease? (Hint: you can use the multiplication rules P(A| B) x P(B) = P(AnB) = P(B|A) x P( A), where P( A) represents the marginal probability of testing positive while P(B ) represents the marginal probability that a person truly has the disease.) O 1/3 O 0.48 O 0.75 O 0.8