In an effort to increase customer satisfaction John and Mari

In an effort to increase customer satisfaction, John and Mario of Mi Casa Front Porch Restaurant are looking for ways to improve their processes. There are two potential areas of focus, one is the waiting time for a table and the other is the waiting time for the food to be served once it is ordered. They need to determine if these processes are running according to the customer specifications. The mean time waiting for a table is 20 minutes with a standard deviation of 8.50 minutes. The customer specification of wait time for a table is 25 minutes +/- 2.0 minutes. The mean time for waiting for food to be served once it is ordered is 15 minutes with a standard deviation of 2.0 minutes. The customer specification limit is 18.5 minutes, +/- 3.0 minutes. Which process should John and Mario focus on?

Calculate process capability for both wait time for a table and wait time for food and determine which process Mi Casa Front Porch Restaurant leadership should focus on for process improvement. Support your conclusions.

Solution

Which process should John and Mario focus on?

The mean time waiting for a table

because it has more deviation , that means more variability