Question: please I need help in this question ... please as soon as possible.. Thank you .. 1. (20 marks) A company is interested in monitoring

please I need help in this question ...

please I need help in this question ... please as

please as soon as possible..

Thank you ..

1. (20 marks) A company is interested in monitoring the average time it takes to serve its customers. The results for five samples are given in the table. Sample Service time (in minutes) 1 12.1 10.3 7.5 2 10.2 13.6 3 9.2 12.7 4 10.0 7.8 5 6.6 7.9 8.7 9.3 a. Determine the central line and control limits for the range and mean charts, and discuss whether or not the process is in statistical control. 9.4 8.4 11.0 6.3 8.3 10.1 8.1

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