Social & Preventive Medicine In a group of 100 people, the average GFR is 85 ml/ min with a standard detion of 25. What is the range for 90% confidence interval? A 81-89 B 80-90 C 75-95 D 70-100 💡 Explanation In a group of 100 people, the average GFR is 85 ml/ min with a standard detion of 25. What is the range for 90% confidence interval? ✓ Correct Answer: A. 81-89