Center line and control limits for an x control chart

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A sandwich shop owner takes a daily sample of seven consecutive sandwich orders at a random time during the lunch rush and records the time it takes to complete each order. Past experience indicates that the process mean should be μ = 86 seconds, and the process standard deviation should be σ = 22 seconds.

Calculate the center line and control limits for an x control chart. (Round your answers to two decimal places.)

CL =  86 sec

LCL =  _____sec

UCL =   _____sec

Reference no: EM131950636

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