in a hospital unit there are 8 nurses and 5 physicians , 7 nurses and 3 physicians are female . if a staff person is selected , find the probability that the subject is a nurses or a male . A number between 1 and 10, inclusive, is randomly chosen. Events A, B, C, and D are defined as follows. A: {The number is even} P(A) = 5/10 { 2,4,6,8,10) B: {The number is less than 7} P(B) = 6/10 { 1,2,3,4,5,6} C: {The number is odd} D: {The number is greater than 5} Identify one pair of mutually exclusive events. For two events, A and B, P(A) = .6, P(B) = .8, and P(A | B) = .5. Find P( A n B ). 19