Question: 1. Control Chart for Defective Seat Belts The Flint Accessory Corporation manufactures seat belts for cars. Federal specifications require that the webbing must have a

1. Control Chart for Defective Seat Belts The Flint Accessory Corporation manufactures seat belts for cars. Federal specifications require that the webbing must have a breaking strength of at least 5000 lb. During each week of production, 200 belts are randomly selected and tested for breaking strength, and a belt is considered defective if it breaks before reaching the force of 5000 lb. The numbers of defects are listed below for a sequence of 10 weeks. Use a control chart for p to verify that the process is within statistical control. If it is not in control, explain why it is not.

6 4 12 3 7 2 3 5 4 2

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