In: Statistics and Probability
12% of all drivers do not have a valid driving license, 6% of all drivers have no insurance, 4% have neither. The probability that a randomly selected driver fails to have insurance, given that he fails to have a valid license is about
P(No insurance | No license) = P( Neither insurance Nor license) / P(No license)
= 0.04 / 0.12
= 0.3333