Final answer:
The owner of the mobile food unit may be pleased with the 6-minute average customer wait time since it aligns with the standard expectation provided in the reference material and is well below the 95th percentile mark for longer wait times.
Step-by-step explanation:
The satisfaction of the mobile food unit owner regarding the average customer wait time of 6 minutes cannot be determined definitively without additional context or metrics that the owner considers acceptable. However, if we assume that the industry standard or the owner's target is close to the information given in reference (b), i.e., "Since one customer arrives every two minutes on average, it will take six minutes on average for three customers to arrive," the owner may be pleased as it aligns with the expected service rate of the unit.
Further context provided in the references, such as the 95th percentile for the sample mean excess time used being about 26 minutes (reference "The 95th percentile for the sample mean excess time used is about 26.0 minutes..."), and the probability of 0.7919 that the mean excess time used is more than 20 minutes, hint at longer wait times being an outlier rather than the norm. Therefore, if the mobile food unit is consistently achieving a 6-minute wait time, it appears to be performing well in comparison to these references.
Customer satisfaction and operational efficiency are paramount in business, and an average wait time well below the 95th percentile mark indicates the unit is operating efficiently, likely leading to an increase in customer satisfaction and potentially owner's satisfaction as well.