13) In a certain model of car, a study indicates that there is a 15 % chance that the brakes will malfunction in the first year. Last year a car dealership sold 150 cars of this model. Let the random variable X be the number of cars, out of the 150 cars sold, whose brakes malfunctioned in the first year. The mean and standard deviation, respectively, of X are a) 19.125 and 4.37 b) 22.5 and 19.125 c) 10 and 22.5 d) 19.125 and 10 e) 22.5 and 4.37