18. Pickup Trucks In a survey, 510 adults were asked if they drive a pickup truck and if they drive a Ford. The results showed that one in six adults
surveyed drives a pickup truck, and three in ten adults surveyed drive a Ford.
Of the adults surveyed that drive Fords, two in nine drive a pickup truck.
(a) Find the probability that a randomly selected adult drives a pickup truck,
given that the adult drives a Ford.
(b) Find the probability that a randomly selected adult drives a Ford and
drives a pickup truck.
(c) Are the events "driving a Ford” and “driving a pickup truck” independent
or dependent? Explain.