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)
Responses
retesting 100 light bulbs that have already been tested
retesting 100 light bulbs that have already been tested
testing every fiftieth light bulb in the production line
testing every fiftieth light bulb in the production line
testing the last 4,000 bulbs 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
testing every fiftieth light bulb in the production line
By randomly selecting every fiftieth light bulb in the production line for testing, the quality control manager can obtain a representative sample from the entire production line. This method increases the likelihood of capturing the variability in the production process and providing a valid inference about the percentage of defective light bulbs.