This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Statistical Errors, p-value, Subject name: Social & Preventive Medicine
Confidence limit includes:- 
Select and explain. 
A. Range and standard detion, B. Median and standard error, C. Mean and standard error, D. Mode and standard detion
C: Mean and standard error
Answer: C: Mean and standard error 
Explanation: - Confidence limit includes Mean and standard error. - Confidence limits are the upper and lower boundaries of a confidence interval. Confidence interval is the interval within which a parameter value is expected to lie with ceain confidence levels, as could be revealed by repeated samples. CI= Mean +/- (Z x Standard error), Where Z= critical value, and S.E. =Standard detion/ [?]sample size= S.D./[?]n