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Social & Preventive Medicine JIPMER 2019 adb972b6

What happens to minimum sample size when range of allowable error is doubled?

A
Reduced to 1/2
B
Reduced to 1/4
C
Reduced to 1/16
D
Sample size does not depend on acceptable error
High-Yield Explanation
Sample size = 4 Pq / L2 ( permissible error )Sample size a 1/ (error)2= 1/ (2E)2= 1/4

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