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
• retesting 100 light bulbs that have already been tested
• testing the first 2,000 light bulbs in the production line

Answer 1

Testing the first 2,000 light bulbs in the production line would most likely lead to a valid inference, as it provides a random sample of the entire production line without bias towards any specific group of light bulbs. This method allows for a representative sample to be taken and for accurate conclusions to be drawn about the overall percentage of defective light bulbs in the production line.