You are tasked with selecting the supplier for a new part from four possible venders A, B, C, and D. You have data related to price, quality, delivery performance, and a sustainability score (5 is best). Assuming each of these four aspects are equally weighted by your purchasing organization, which supplier would you choose given the following information? The critical part dimension for the quality data has a specification of 2.50.05 cm; and daily demand of 25, with a daily standard deviation of 30 units; 365 days a year. For this part your organization prefers a service level of at least 95%.

Assume your organization focuses primarily on price, assume you are forced to use vendor D (even if D did not win your bid in #1). Using the data in the previous problem, how much should be ordered, and when should be orders be placed if the fixed ordering cost is $250/order and the inventory carrying cost is 40% and what is the total cost of this policy? Suppose vender D offers a 7% discount off the price, provided the order volume is at least 4000 units, does this change your answer regarding how much to order, and, if so, what is the new total cost? PLEASE SHOW ALL WORK

\begin{tabular}{|l|l|l|l|l|} \hline Vender & A & B & C & D \\ \hline Price/unit & $15.10 & $15.35 & $16.50 & $14.55 \\ \hline X, in cm & 2.502 & 2.497 & 2.498 & 2.503 \\ \hline, in cm & .0127 & .0125 & .0111 & .0121 \\ \hline Leadtime (days) & 18 & 15 & 11 & 20 \\ \hline LeadtimeStd.Dev.(days) & 9 & 6 & 5 & 5 \\ \hline SustainabilityIndex(5isbest,0isworst) & 4 & 5 & 4.5 & 3 \\ \hline \end{tabular}