Question: Inspectors want to develop process control charts to measure the weight of crates of wood. Data (in pounds) from three samples are: Crate 2 Crate

Inspectors want to develop process control charts

Inspectors want to develop process control charts to measure the weight of crates of wood. Data (in pounds) from three samples are: Crate 2 Crate 4 18 38 Sample Crate 1 1 2 3 26 Crate 3 22 28 26 26 26 30 20 26 26 (a) What is the upper control limit for the R chart? (b) What is the lower control limit for the R chart? (c) What is the upper control limit for the x-bar chart? (d) What is the lower control limit for the x-bar chart? (e) Is the process in a state of control? If not, why not

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