a. A town contains 4 people who repair televisions. If 4 sets break down, what is the probability that exactly i of the repairers are called?
b. Solve the problem for i=1, 2, 3, 4. What assumptions are you making?
a. A town contains 4 people who repair televisions. If 4 sets break down, what is the probability that exactly i of the repairers are called?
b. Solve the problem for i=1, 2, 3, 4. What assumptions are you making?