Equality 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 interference? The answers are testing every 5oth light bulb in the production line testing the last 4000 bulbs in the production line? Testing the first 2000 light bulbs in the production line? Retesting 100 light bulds that have already been tested? Which one is the answer
Testing every 50th light bulb in the production line would most likely lead to a valid inference. This method ensures that a representative sample of the entire production line is being tested, increasing the likelihood of an accurate estimation of the percentage of defective light bulbs. Testing the last 4000 bulbs or the first 2000 bulbs may not provide a random and representative sample of the entire production line. Retesting 100 light bulbs that have already been tested would not be necessary and would not provide new information about the percentage of defective light bulbs in the production line.
