Question: Question 12 3 points Seve Answer Fred's Grill has been monitoring its customer service times over the past 5 days. Each day they took a

Question 12 3 points Seve Answer Fred's Grill has been monitoring its customer service times over the past 5 days. Each day they took a sample of 10 customers and recorded the actual service times for those customers. The table below shows the sample mean and sample range for each of the 5 past samples. Sample 1 2 3 4 5 Mean 20.2 18.6 19.4 22.0 21.8 Range 7.4 0.8 3.2 2.9 1.0 What is the three-sigma upper control limits (UCL Only the company should use to construct an R-chart for this service time data

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