Question: please let me know how to do this one, its different from the one i sent earlier these two are different questions. A barber shop

please let me know how to do this one, its different from the one i sent earlier these two are different questions.

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 5 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. Your

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