Two officers controlling traffic at a check-point took notes on the make of the vehicles that pass through the check-point. The notes are used to construct the table below:

GM Ford Chrysler

Small car 14 24 22

Mid-size Car 66 42 63

Truck 20 34 15

Assume that those observations constitute a random sample of the vehicles in the city where the officers work.

1. If you randomly pick a vehicle in the town, what is the probability that it is a GM vehicle?

2. If you randomly select a vehicle, what is the probability that it is a small car made by Chrysler.

3. Given that the vehicle you selected is made by Ford, what is the probability that it is a truck

4. Given that the vehicle you selected is a truck, what is the probability that it is made by Ford.