Question: Chapter 8 Statistical Process Control Homework 1. Wait time (hts) at the DMV is monitored using a mean and a range chart. Five samples of

Chapter 8 Statistical Process Control Homework 1. Wait time (hts) at the DMV is monitored using a mean and a range chart. Five samples of n=15 observations have been obtained and the sample means and ranges computed: Sample 1 2 3 4 5 Mean 1.73 2.56 1.24 0.53 Range 0.48 0.37 0.41 0.46 0.49 a) Determine upper and lower limits for mean and range charts. b) Is the process in control

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