Question: Question 2

Suppose that you are an operations analyst for Chase Bank. As part of your rotation through various departments, you spend time observing wait times to see a bank teller at one of its branches. From prior customer wait time data, the population mean wait time is 9 minutes with population standard deviation of wait times of 1.5 minutes. Chase Bank headquarters suggests LSL of 0 minutes and USL of 10 minutes .

a) Compute the ppm for this process.

b) Compute Cp for this process.

c) Compute Cpk for this process.

d) Is this process better or worse than a Motorola Six-Sigma process? (Justify your response).