Mathematics, 25.05.2021 03:30 katyrb02

En una prueba de duración para determinar la vida útil de un nuevo tipo de lámpara lanzada al mercado, los datos de la muestra se distribuyeron de manera casi normal. Se calculó una vida útil promedio de 7000 hrs. y una desviación de 520 hrs. Halla el porcentaje de lámparas que tendrán
una vida útil
a) entre la media y 7600hrs.
b)entre 6500 hrs y 7600 hrs.
c) mas de 7600

Answers: 2

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En una prueba de duración para determinar la vida útil de un nuevo tipo de lámpara lanzada al mercad...