Samples of 12-volt batteries are taken at 30-minute intervals during a production run. Each sample consists of 3 batteries, and a technician records how long each battery will produce 400 amperes during a standard test. Given the following data, also listed in file XR20042, construct 3-sigma mean and range control charts and evaluate whether the process is in control.
Answer to relevant QuestionsThe tensile strength of sheet metal screws is monitored by selecting a sample of 4 screws at 30-minute intervals, then seeing how many pounds of force are required to break each screw. Given the following data, also listed ...Twelve samples have been taken from a production run. Given the following data, construct a 3-sigma p-chart and evaluate whether the process is in control. Differentiate between the Process Potential Index (Cp) and the Process Capability Index (Cpk). In what way(s) are they similar? In what way(s) do they differ? The data in file XR20062 represent the number of anonymous tips phoned in during each of 50 consecutive days to a local law enforcement hotline. Use your statistical software in generating an appropriate control chart for ...The number of defective products in each of 40 samples taken from a production run are shown here. In each sample, 200 units were examined and classified as either good or defective, depending on whether dimensional ...
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