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En un condado de california se tienen 724 declaraciones de impuestos corporativos. El ingreso anual medio reportado es de $161220 con una desviacin estandar de

En un condado de california se tienen 724 declaraciones de impuestos corporativos. El ingreso anual medio reportado es de $161220 con una desviacin estandar de $31300 de que tamao deberia ser la muestra el siguiente ao para obtener un intervalo de confianza de aproximadamente 95% para el ingreso corporativo anual medio la presicion deseada es de una amplitud de intervalo no mayor que 5000

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