As a general rule, researchers tend to use percent confidence intervals.

As a general rule, researchers tend to use percent confidence intervals. Options: (a) 99% (b) 95% (c) 50% (d) None ✅ Correct Option: (b) 95% Explanation (200+ words): The 95% confidence interval is most commonly used in research because it balances accuracy and practicality. It indicates that if the study were repeated many times, 95% of the intervals would contain the true population parameter. 10 PPSC-Related Facts: 1. 95% is most common 2. Balances certainty and width 3. Based on normal distribution 4. Uses critical values 5. Common in social sciences 6. Higher confidence = wider interval 7. Used in estimation 8. Interpreted probabilistically 9. Standard research practice 10. Frequently examined