A certain disease has an incidence rate of 0.1%. If the false negative rate is 7% and the false positive rate is 5%, compute the probability that a person who tests positive actually has the disease.
total= 100,000
Infected= 100 = (0.1% * 100,000)
Pos+Diseased = 93
Pos+NOTDiseased = 4995
Neg+Diseased = 7
Neg+ NOTDiseased = 94905
(PD) / (PND) = 93/ 4995
= 0.019 ( rounded to three decimal places)
