It is known from experience that in a certain industry 40 percent of all labour-management disputes are over wages, 40 percent are over working conditions, and 20 percent are over fringe benefit. Also, 9 percent of the disputes over wages are resolved without strikes, 20 percent of the disputes over working conditions are resolved without strikes, and 6 percent of the disputes over fringe benefit are resolved without strikes.
(i) What is the probability that a labour-management dispute in this industry will be
resolved without a strike?
(ii) What is the probability that a labour-management dispute is over working conditions if it is resolved without a strike?