As the delivery parameter, we choose a time frame of one month. Table 1 includes the values for each supplier of the office. Supplier Ordered S Number Number Number number of on- of items time delivered of delayed of Number of Q nonconformi T conformi ng items items ng items items Principle of Buying 01 1 BUS13024 Winter 2022 A 16 15 12 3 B 14 14 0 14 0 4 3 1 3 0 27 20 7 18 2 E 155 155 3 146 9 F 81 68 13 68 0 Based on the criteria, a matrix with four categories has been created: Quadrant 1 (Q1) the supplier is sufficiently reliable from the view point of the timeliness of delivery T, but not sufficiently reliable from the view point of quality of supplies Q. Quadrant 2 (Q2) - the supplier is sufficiently reliable from the view point of the timeliness of delivery T and quality of supplies Q. Quadrant 3 (Q3) the supplier is not sufficiently reliable from the view point of the timeliness of delivery T and quality of supplies Q. Quadrant 4 (Q4) the supplier is sufficiently reliable from the view point of the quality of supplies Q, but not sufficiently reliable from the view point of the timeliness of delivery Based on the discussion with organisation office staff, they selected the acceptable level of 0.85 for both criteria. This means that the supplier delivery (in our case, each month) has to reach 85% of conforming items and 85% on-time delivered items to be included in the quadrant with the best rating (quadrant II). Task: 1) Calculate the amount of T & Q for each supplier and 2) Map them according to the relevant quadrant, then 3) Advise which supplier has the best performance.