The probability that a one-car accident is due to faulty brakes is 0.04, the probability that a one-car accident is correctly attributed to faulty brakes is 0.82, and the probability that a one-car accident is incorrectly attributed to faulty brakes is 0.03. what is the probability that

a) a one-car accident will be attributed to faulty brakes;

b) a one-car accident attributed to faulty brakes was actually due to faulty brakes?