Determine the value of ???? required to achieve the desired bound on the error of estimation associated

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Determine the value of ???? required to achieve the desired bound on the error of estimation associated with ????̄ when

(a) ???? = 7500, ???? = 20, and ???? = 2.5.

(b) ???? = 15000, ???? = 60, and ???? = 4.5.

(c) ???? = 25000, ???? = 120, and ???? = 5.

(d) ???? is unknown, ???? = 5, and ???? = 0.1.

(e) ???? is unknown, ???? = 80, and ???? = 2.5.

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