Social & Preventive Medicine In a normal surve, what percent of the values will be included in the area between two standard detions on either side of the mean (x+- ….) ? A 68.3 B 90.4 C 95.4 D 99.7 💡 Explanation In a normal surve, what percent of the values will be included in the area between two standard detions on either side of the mean (x+- ....) ? ✓ Correct Answer: C. 95.4