Refer to the x- and -charts, Exercises 16.11 and 16.20. Conduct a runs analysis to detect any

Question:

Refer to the x̅- and -charts, Exercises 16.11 and 16.20. Conduct a runs analysis to detect any trend in the process.

Data from Exercise 16.11

A corporation that manufactures field rifles for the Department of Defense operates a production line that turns out finished firing pins. To monitor the process, an inspector randomly selects five firing pins from the production line, measures their lengths (in inches), and repeats this process at 30-minute intervals over a 5-hour period.