Process Capability (Example)

• Food served at a restaurant should be between 38o C and 49o C when it is delivered to the customer. The process used to keep the food at the correct temperature has a process standard deviation of 2 o C. What is the process capability of the process?

• If the mean temperature of the food prior to delivery is 43.5 o C, what proportion of all meals will be delivered at an acceptable temperature?

• If management wants to ensure that only 0.1% of meals are delivered either too warm or too cold, what specifications should they set for delivery temperature?

• What other course of action could management take to make sure that only 0.1% of meals are delivered either too warm or too cold?

Process Capability (Example)

Food served at a restaurant should be between 38o C and 49o C when it is delivered to the customer. The process used to keep the food at the correct temperature has a process standard deviation of 2 o C. What is the process capability of the process?

Process Capability (Example)

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Food served at a restaurant should be between 38o C and 49o C when it is delivered to the customer. The process used to keep the food at the correct temperature has a process standard deviation of 2 o C. What is the process capability of the process?

Process Capability (Example)

If the mean temperature of the food prior to delivery is 43.5 o C, what proportion of all meals will be delivered at an acceptable temperature?

Process Capability (Example)

If the mean temperature of the food prior to delivery is 43.5 o C, what proportion of all meals will be delivered at an acceptable temperature?

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Process Capability (Example)

If management wants to ensure that only 0.1% of meals are delivered either too warm or too cold, what specifications should they set for delivery temperature?

Process Capability (Example)

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If management wants to ensure that only 0.1% of meals are delivered either too warm or too cold, what specifications should they set for delivery temperature?

Process Capability (Example)

What else could management do?