2. Nighthawk Airlines measured their numbers of lost bags in one month and found that they had lost 35 bags for 10,000 customers. If the average number of bags per customer is 1.2, use the Six Sigma Excel template to find at what sigma level is the airline operating. 2. Nighthawk Airlines measured their numbers of lost bags in one month and found that they had lost 35 bags for 10,000 customers. If the average number of bags per customer is 1.2, use the Six Sigma Excel template to find at what sigma level is the airline operating