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Pregunta 12 8.8 pts Suponga que eI director de manufactura de una fbrica de telas necesita determinar una nueva miquina esti produciendo un tipo

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Pregunta 12 8.8 pts Suponga que eI director de manufactura de una fbrica de telas necesita determinar una nueva miquina esti produciendo un tipo particular de tela segn Ias especificaciones del fabrlcante: que Indican que Ia tela debe tener una resistencia promed10 de romp:miento de por 10 menog 70 libras. Con una muestra de 16 piezas se obtuvo una media de muestra de 72.60 libras, con una desviaci6n estindar d 4 SO libras. Hallar un Intervalo de confianza del para Ia reststenc:a prom edio Cul es eI limite Inferior del Intervalo? Nota: Redondear a dos decimales

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