1: A certain disease has an incidence rate of 0.5%. The false negative rate on a test for the disease is 5%; the false positive rate is 5%. Compute the probability that a person who tests positive actually has the disease. (You may find it useful to construct a probability contingency table.) The probability a person who tests positive actually has the disease is __________. Give your answer accurate to at least 3 decimal places.

2: P(A)=0.4,P(B)=0.65andP(A and B)=0.2. P(BA)= __________ P(notBA)= __________ P(notBnotA)= __________