Before revision:  As an example, when p=0.02 , the optimal strategy is k=3, m=(27,9,3) . The cost of this strategy is 0.20 , that is, the mean number of tests required to screen 100 individuals is 20.
After revision:  As an example, when p=0.02 , the optimal strategy is k=3, m=(27,9,3) , with cost 0.20 , that is, the mean number of tests required to screen 100 individuals is 20.