William Is Considering a Dispatch Rule to Satisfy More Physicians

William is considering a dispatch rule to satisfy more physicians. William requested that each physician put a desired completion time on each request for blood testing. To investigate the effects of changing the dispatch rules, William decides to take the first five requests for blood work from one of the technicians and analyze job completion under various scheduling rules. The following table shows the time to complete blood work on each sample and the time when the physician has requested that it to be complete.

-Using the processing order as per the shortest process time (SPT) , determine the average tardiness.

A) 96 minutes
B) 58 minutes
C) 54 minutes
D) 66 minutes
E) 110 minutes