For a group of 1000 vehicles in 2013 45 of them had their tr

For a group of 1000 vehicles in 2013. 45 of them had their transmission fixed under warrenty. 430 of those transmissions were from plant A and 32 of those had thier transmission repaired under warrenty.

Randomly selected from that group that were repaired, what is the chances that it was not manufactured at plant A.

Solution

So the chances that it was not manufactured at plant A is

1-32/45 = 0.2888889