I’m trying to study for my Statistics course and I need some help to understand this question.
Janice is a production manager for a company that designs and produces hydraulic valves that are used in aircraft systems. The company is concerned that the number of valves not meeting the strict measurement parameters has incereased over the past several months. She implements a quality control program that includes random inspections. Employees are notified that these inspections will help the company to reduce expenses from poor product quality. Janice runs the program for 9 months and performs a different number of inspection each month. The table below shows the number of inspections and the number of faulty hydraulic valves produced each month.
InspectionsNumber of faulty valves6541196477985313766
Run the analysis and answer the following questions:
1. Does the number of inspections result in fewer faulty valves? (Run the analysis and report the results)
2. What decision should Janice make regarding the quality control inspections?
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