Data compiled by Highway Patrol Department concerning use of seat-belts by drivers in the certain area after passage of compulsory seat-belt law are shown in accompanying table.
| Drivers | Percentage of
Drivers in Group | Percent of Group Stopped
for Moving Violation |
Group I
(using seat-belts) |
56 |
0.2 |
Group II
(not using seat-belts |
44 |
0.4 |
(a) If the driver in that area is stopped for the moving violation, find probability that he or she will have the seat-belt on?
(b) If the driver in that area is stopped for moving violation, find probability that he or she will not have the seat-belt on?