The running of red lights by drivers is a serious problem in many cities. A police officer is stationed near a major intersection to observe the traffic for several days.
a. Is the number of cars running a red light during a given light cycle a discrete or continuous random variable?
b. Is the time between the light turning red and the last car passing through the intersection a discrete or continuous random variable?
c. Are the brands of cars running a red light a discrete or continuous random variable?