Question: Question 17 (1 point) The data for an average-and-range control chart for subgroups of n = 9 show a grand average of 26.8 and an

Question 17 (1 point)

The data for an average-and-range control chart for subgroups of n = 9 show a grand average of 26.8 and an average range of 2.6. What is the lower control limit for the Range chart?

Question 17 options:

23.09

0

0.368

1.87

0.5

0.274

0.4784

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