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1. Un productor quiere comparar dos marcas de insumos, A y B; para producir un tipo de bien. Observa dos muestrasaleatorias de 70 artculos procesados

1.Un productor quiere comparar dos marcas de insumos, A y B; para producir un tipo de bien. Observa dos muestrasaleatorias de 70 artculos procesados por A y B respectivamente yencuentra que las medias respectivas son 1,250 y 1,290 segundos. Suponga120y90 segundos. Al nivel de significacin del 5%,se puede inferir que la mquina B es ms rpida que la mquina A?

 

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