Asign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 8 cars needs to have oil added. if this is true, what is the probability of each of the following: a. exactly three out of the next eight cars needs oil. probability = b. at least three out of the next eight cars needs oil. probability = c. at most 6 out of the next 8 cars needs oil. probability =