valeriegarcia12
10.06.2020 •
Mathematics
Un fabricante afirma que la resistencia promedio a la tensidn ios tornillos A exceden la de los tornillos B al menos en 12 kilogramos. Para probar esta afirmación, se examinan 50 piezas de cada tipo de tornillo bajo çondiciones similares. El tornillo tipo Á tuvo una resistencia promedio a la tensión de 86.7 kilogramos con una desviación estándar de 6.28 kilogramos, mientras para el tornillo tipo B, estos mismos parámetros fueron de 77.8 kilogramos y 5,6/ ki19gr?mÓsl 'respectivamente. Compruebe la afirmación del fabricante utilizando un nivel de significancia de 0.05.
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