We asked 6 students how many times they rebooted their computers last week.  There were 4 Mac users and 2 PC users. The PC users rebooted 2 and 3 times. The  Mac users rebooted 1, 2, 2 and 8 times. Let C be a Bernoulli random variable  representing the type of computer of a randomly chosen student (Mac = 0, PC = 1).  Let R be the number of times a randomly chosen student rebooted (so R takes values  1,2,3,8)