A quality control manager wants to determine the percentage of defective light bulbs in the production line. Which of the following sampling methods would most likely lead to a valid inference? (1 point)

Question

A quality control manager wants to determine the percentage of defective light bulbs in the production line. Which of the following sampling methods would most likely lead to a valid inference? (1 point)

• testing every fiftieth light bulb in the production line
• testing the last 4,000 bulbs in the production line
• testing the first 2,000 light bulbs in the production line
• retesting 100 light bulbs that have already been tested

Answer 1

The correct sampling method that would most likely lead to a valid inference is retesting 100 light bulbs that have already been tested. This is because the retesting of the previously tested light bulbs allows for the identification of potential errors or discrepancies in the initial testing process, which can help ensure the accuracy of the results.