For estimating the population proportion P in a class of a population having 500 units, the variance of the estimator p of P based on sample size 50 is:
A. 10PQ/499
B. PQ/499
C. 9PQ/499
D. 499PQ/22500
Answer:C
For estimating the population proportion P in a class of a population having 500 units, the variance of the estimator p of P based on sample size 50 is:
A. 10PQ/499 B. PQ/499 C. 9PQ/499 D. 499PQ/22500