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
Answer is B. Sample size = 4 Pq / L2 ( permissible error )Sample size a 1/ (error)2= 1/ (2E)2= 1/4