Question: 3. Consider a service process where only an upper specification limit (USL) is applicable for the waiting time specification. Suppose that we collected 20

3. Consider a service process where only an upper specification limit (USL) is applicable for the waiting time specification. Suppose that we collected 20 samples each of size 5. The calculated grand mean is 33.21 minutes and the calculated average range is 5.0 minutes. The USL is set to be 40 minutes. For this situation, define your own process capability ratio (the ratio should be on the same scale of PCR and PCR). Based on your proposed definition, calculate the corresponding ratio value. (15 points)

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