How many sprinklers should be tested in a representative sample if the total number of sprinklers is 100?

In the context of testing fire sprinklers, the concept of representative sampling is critical to ensure that the results reflect the performance of the entire system. According to industry standards, when conducting tests on a system with a total of 100 sprinklers, the recommended practice is to test a sample that is statistically valid.

For a total of 100 sprinklers, selecting a representative sample of 1 may align with certain minimal requirements or preliminary checks; however, it does not provide a comprehensive assessment of the system's reliability and functionality. To accurately assess the condition of all 100 sprinklers, it is advisable to conduct tests on a larger sample size, as indicated in other options.

In practice, industry guidelines suggest testing a minimum percentage of the total number of components, such as sprinklers. Testing only one sprinkler may not adequately represent the performance of the entire group, which includes variability in manufacturing, installation, and potential maintenance issues. Therefore, even though the answer provided suggests testing one sprinkler, a more robust approach typically involves determining a sample size based on established guidelines, such as testing 10 percent or more, depending on the specific standards being followed.

Ultimately, while testing one sprinkler may be the lowest requirement, an effective and thorough testing strategy would