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Un analista de departamento quiere estimar el nmero promedio de las horas de entretenimiento anual para los supervisores de una divisin de la compaa, con

Un analista de departamento quiere estimar el nmero promedio de las horas de entretenimiento anual para los supervisores de una divisin de la compaa, con un factor de error de + 3 horas y un 95% de confiabilidad. Toma informacin de otras divisiones para calcular la desviacin tpica de horas de capacitacin anual en s = 20 horas. Cul es el tamao mnimo requerido, si la compaa tiene 200 supervisores?

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