In my car, when oil is too low, I get a warning. The probability of getting a warning when I should (when the oil is really low) is O.97.But 5

percent of the time it warns me despite the oil being just fine. After driving my car for about six months since my last oil change,there is a 10 percent chance the oil is too low. a) If the warning has come up, what is the probability that the oil is actually too low and I need to go change it? b) If the warning is not on, what is the probability that everything is ok, and oil is not too low?