Question: Kylee Arnott is a manager at a call Centre. She wants to measure the response time of its operators in dealing with customer queries. Arnott

Kylee Arnott is a manager at a call Centre. She

Kylee Arnott is a manager at a call Centre. She wants to measure the response time of its operators in dealing with customer queries. Arnott lists below the time recorded (in minutes) from four different samples with seven customer calls per sample. She wants to determine the upper and lower range control chart limits. Is the system in control? Sample 1 Observations 10 5 5 6 4 5 6 7 4 5 6 4 5 2 3 002 2 4 7 6 7 10 2. 4 6 1 1 3 4 3

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