Find the probability that an accident involves at least one car.

Question

Probabilities of different types of vehicle-to-vehicle accidents are shown below:

 

Accident Probability

 

Car to Car 0.65

Car to Truck 0.17

Truck to Truck 0.18

Answer 1

(Car to Car) OR (Car to Truck)

    0.65        +       0.17

              0.82

 

Also, probability of 1 means certainty, so:

   (Car to Car) + (Car tp Truck) + (Truck to Truck) = 1

   (Car to Car ) + (Car to Truck) + 0.18 = 1

   (Car to Car) + (Car to Truck) = 0.82