A company making tires for bikes is concerned about the exact width of their cyclocross tires. The company has a lower specification limit of 22.9 mm and an upper specification limit of 23.2 mm. The standard deviation is 0.17 mm and the mean is 23.05 mm. (Round your answer to 4 decimal places.) What is the process capability index for the process?

Exercise 2-12 cost behavior; high-low method [lo2-3, lo2-4] speedy parcel service operates a fleet of delivery trucks in a large metropolitan area. a careful study by the company’s cost analyst has determined that if a truck is driven 120,000 miles during a year, the average operating cost is 11.6 cents per mile. if a truck is driven only 80,000 miles during a year, the average operating cost increases to 13.6 cents per mile. required: 1.& 2. using the high-low method, estimate the variable and fixed cost elements of the annual cost of truck operation. (round the "variable cost per mile" to 3 decimal places.)