Five samples of size 4 were taken from a process. A range chart
was developed that had LCLr = 0 and UCLr = 2.50. Similarly, an
average chart was developed with the average range from the five
samples, with LCLx = 15.0 and UCLX = 24.0. The ranges for each of
the five samples were 1.75, 2.42, 2.75, 2.04, and 2.80,
respectively. The values of the sample average for each sample were
19.5, 22.3, 17.4, 20.1, and 18.9, respectively. What...