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Un gerente de banco desea tener una confianza de 90% de estar en lo correcto, dentro +0.05 de la porcin verdadera de depositantes que tienen
Un gerente de banco desea tener una confianza de 90% de estar en lo correcto, dentro +0.05 de la porcin verdadera de depositantes que tienen tanto cuenta de ahorro como de cheques. Qu tamao de muestra necesita?
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