The Accompanying Observations Are Numbers of Defects in 25 1-Square-Yard

question 23

Essay

The accompanying observations are numbers of defects in 25 1-square-yard specimens of woven fabric of a certain type: 3, 7, 5, 3, 4, 2, 8, 4, 3, 3, 6, 6, 2, 3, 2, 4, 7, 3, 2, 3, 4, 1, 5, 4, 6. Determine control limits for a 3-sigma c chart for the number of defects, and discuss the behavior of the chart.

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Definitions:

Input

In computing and electronics, an input is the signal or data received by a system or component.

Normally Closed

A term used to describe a switch or contact configuration where the default state is making contact (closed), allowing current flow until actuated to open.

Stop Buttons

Manual control devices used to halt machine operations or processes, typically as a safety or emergency measure.

PLC

Stands for Programmable Logic Controller, a digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines.