Question: The data in the file < ROPE > are the tensile strengths in megapascals (mPa) of nylon fibre ropes. The data were collected in subgroups

The data in the file < ROPE > are the tensile strengths in megapascals (mPa) of nylon fibre ropes. The data were collected in subgroups of three over a 24-hour manufacturing period.

a. Construct a control chart for the range.

b. Construct a control chart for the mean.

c. Is the process in a state of statistical control?

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