Question

the mathematics Department of a college has 11 male professors 12 female professors 9 male teaching assistants and 12 female teaching assistant if a person is selected at random from a group find the probability that the selection person is teaching assistant or a female ​

Answer 1

P(teaching assistant or a female) = 1 - P(professor and male) = 1 - 11/44 = 1 - 0.25 = 0.75

Make a Contingency_table