Question: Determine the sample size required for a simple random sample to attain the prespecified bound on the error of estimation for estimating a mean when

Determine the sample size required for a simple random sample to attain the prespecified bound on the error of estimation for estimating a mean when

(a) ???? = 7500, ???? ≈ 30, and ???? = 1.2.

(b) ???? = 1500, ???? ≈ 3, and ???? = 0.2.

(c) ???? = 12500, ???? ≈ 200, and ???? = 5.

(d) ???? = 2500, ???? ≈ 100, and ???? = 7.5.

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