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ZanzabumX [31]
3 years ago
5

El diámetro de los pernos de una fabrica tiene una distribución normal con una media de 950 mm y una desviación estándar de 10 m

m ¿cual es la probabilidad de que un perno escogido al azar tenga un diámetro entre 952 y 957 mm?
SAT
1 answer:
MrRa [10]3 years ago
6 0

<em><u>ANSWER:</u></em>

0.178777

Explicación: X = diámetro de los pernos

Te piden:

P(952 < X < 957)

Ahora tienes que estandarizar para usar la tabla de la distribución

P(952 < X < 957)

P 952-950 < X-950 957-950 10 = 10 10

P(0.2 < Z <0.7)

Z~N(0,1)

P(0.2 < Z < 0.7) = (0.7) (0.2) 0.758036-0.579260 0.178777

Saludos!

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