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Social & Preventive Medicine Measures of Central Tendency and Distribution 9f3c5768

For 95% confidence limits true is :

A
1.95 of standard error of mean
B
Reduces 95% of values
C
2.95 of standard error of mean
D
Normal distribution+-2.5 S.D.
High-Yield Explanation
Ans. is 'a' i.e.1.95 of standard error of mean [Ref: Park 20/e, p 751 (18/e, p647, 17/e p613, 16/e, p 595)Jx +/- 1 - (area b/w 1 S.D on either = 68% confidence limits side of mean)x +/- 2 - (S.D.) =95.4%x +/- 3 - (S.D.) =97.7%

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