1. The problem statement, all variables and given/known data 'A dashboard warning light is supposed to flash red if a car’s oil pressure is too low. On a certain model, the probability of the light flashing when it should is 0.99; 2% of the time, though, it flashes for no apparent reason. If there is a 10% chance that the oil really is low, what is the probability that a driver needs to be concerned if the warning light goes on?' 2. Relevant equations Law of total probability/bayes theorem? 3. The attempt at a solution having trouble making a start..