Question: A barber shop uses process capability to measure the consistency in service times for different customers. The average service time is 40 minutes with
A barber shop uses process capability to measure the consistency in service times for different customers. The average service time is 40 minutes with a standard deviation of 10 minutes. To meet customer expectations, the service time should be between 25 and 55 minutes (otherwise, customers are likely to feel rushed or impatient). Find the process capability index Cpk. Note: Round your answer to 2 decimal places if it is not a whole number.
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