Question 1156413
Look at 10000 people
expect 9 to have the disease. False + is T+ D-, True negative rate is 95% 

              T+.         T-        Total
D+         88.2       1.8.          90
D-          495.5    9414.5   9910
             583.7.     9416.3 10000

Person who tests positive has the disease with probability 88.2/583.7=15.11%