When conducting the equivalent test between product postponement and EOQ, a t-Stat value of 42.6137is significantly larger than the t-Critical values for one-tail (1.6619) and two-tails (1.9866) distributions respectively. Hence, confirming significant statistical difference in mean annual emissions across these inventory management practices. Further examination between Vendor Managed Inventory and EOQ yielded similar results supported by a t-Stat valueof45.1365compared tot-Criticalvaluesof1.6619and 1.9866
for one-tail and two-tails distributions respectively.