Continuing the previous problem, the operations manager of this airline check-in counter has recently made some changes to the operation of the counter that she hopes will reduce customer waiting times. Again, she observes the waiting times of 5 randomly selected passengers during the same hour on each of another 25 days. These observations are given in the file P20_09.xlsx. Characterize the impact of the operations manager's refinements on the performance of this service operation. Does this facility, with respect to customer waiting times, appear to be operating well now? Explain why or why not.