Fast Auto Service provides oil and lube service to cars. The time required to service a car is normally distributed. The mean amount of time to service a car is 30.0 minutes and a The standard deviation in the amount of time to service a car is 5 minutes. a. Determine the probability that a random car can be serviced in less than 20 minutes. Make sure to provide the calculator command and how you gure out the input in that command? b. If it takes longer than 45 minutes to service a car, the driver receives a $10 refund. What percentage of cars would receive this refund? Make sure to provide the calculator command and how you gure out the input in that command