Section Merge: SCM 405: Mfg & Svcs Strategy Midterm Exam 2

For a production process using statistical process control, where each sample has 4 observations in it, let 𝑥 ¯ ¯  = 9.35 inches and 𝑅 ¯ = 3 inches. What is the lower control limit for the 𝑥 ¯ ...