1.In a certain state, 25% of all cars emit excessive

amounts of pollutants. If the probability is 0.99 that a car emitting excessive

amounts of pollutants will fail the state's emission test, and the probability

is 0.17 that a carnot emitting excessive amounts of pollutants will

nevertheless fail the test,

(a) What is the probability that a car fails the emission test.

(b)What is the probability that a car that fails the emission test actually emits excessive amounts of pollutants?