Jim Corner, the owner of Corner Bike Rentals, wants to start analyzing his company's quality. For each bike rental, there are 4 types of customer complaints: (1) bike not working properly, (2) wrong bike size, (3) bike uncomfortable, and (4) bike broken during operation. During the past week, his company rented 380 bikes. He received a total of 22 complaints.
? What is his company's DPMO for the past week?
? What is its Six Sigma operating level?