Create a decision table with the new rules for the SIM system that need to be implemented.

Rules:

Offer customers a service plan where they pay a flat rate once a year. With this plan, customers only pay for the cost of parts when they have their appliance(s) serviced. They can only buy a service plan if they have purchased an appliance from Appliance Warehouse.

If a customer has service on their appliance more than three times during the year, they will have to pay the full amount of the service fee and cost of parts.

If a customer does not buy a service plan but buys their appliance from Appliance Warehouse, they will receive a 20% discount off the service fee for the life of their appliance.

All other customers who do not meet the above conditions will have to pay the full cost of the service plan and parts cost.

	1	2	3	4
Purchased Appliance	Y	Y	Y	N
Purchased Service Plan	Y	Y	N	N
Service > 3 Times	N	Y	X	X
Pay Service Fee	N	Y	Y	Y
Pay Cost of Parts	Y	Y	Y	Y
20% Discount on Service Fee	N	N	Y	N