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El propietario de West End Kwick Fill Gas Station desea determinar la proporcin de clientes que utilizan tarjeta de crdito o dbito para pagar la

El propietario de West End Kwick Fill Gas Station desea determinar la proporcin de clientes que utilizan tarjeta de crdito o dbito para pagar la gasolina en el rea de las bombas. Entrevist a 200 clientes y descubre que 73 pagaron en el rea de las bombas.

Calcule el limite inferior del intervalo de confianza de 90%

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