A sales completion team, aiming to reduce the shipment time of urgent orders, studies the current process and finds that the current shipment time has a mean of 4 days with a standard deviation of 1.5 days. Industry expectations are for urgent shipments to be delivered between 1 and 5 days.

(2) One manager felt that the mean could be reduced to 3 days without changing the standard deviation. What is the process capability Cpk of the new system? Please keep 4 decimal places for your answer.