Allocate a total sample size of between two strata, where a. Use proportional allocation to…

Allocate a total sample size of  between two strata, where

a. Use proportional allocation to determine n1 and n2.

b. Use optimal allocation to determine n1 and n2.

c. Compare the variances of these two estimators to the variance of the estimator obtained from simple random sampling.

 

 

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