Question: A simple random sample requires 400 listing units in order for estimated means and totals to meet specifications of precision. If all PSUs have the

A simple random sample requires 400 listing units in order for estimated means and totals to meet specifications of precision. If all PSUs have the same number N of listing units, how large a simple cluster sample with cluster size n equal to 4 would be needed to achieve the same precision when the intraclass correlation coefficient is equal to .6?

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