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Teoría de colas

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Ejercicios resueltos de investigación operativa del tema de teoría de colas

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EJERCICIOS DE TEORÍA DE COLAS


1. Suponga que en una estación con un solo servidor llegan en promedio 45

clientes por hora, Se tiene capacidad para atender en promedio a 60 clientes por

hora. Se sabe que los clientes esperan en promedio 3 minutos en la cola.

Se solicita:

λ = 45/60 = 0.75 cliente por minuto

60
u= =1 cliente por minuto
60

Wq=3 minutos

a. Tiempo promedio que un cliente pasa en el sistema.

1
Ws=Wq +
u

1
Ws=3+
1

Ws=4 minutos


b. Número promedio de clientes en la cola.

Lq=λ∗Wq

Lq=0.75∗3

Lq=2.25 clientes


c. Número promedio de clientes en el Sistema en un momento dado.

Ls=λ∗Ws

Ls=0.75∗4

Ls=3 clientes

, 2. Suponga un restaurante de comidas rápidas al cual llegan en promedio 100

clientes por hora. Se tiene capacidad para atender en promedio a 150 clientes por

hora Se sabe que los clientes esperan en promedio 2 minutos en la cola Calcule

las medidas de desempeño del sistema

λ = 100 clientes por hora

u=150clientes por hora

Wq=2 minutos

a. ¿Cuál es la probabilidad que el sistema este ocioso?

λ
p=
u

100
p=
150

p=0.667=66.7 % sistema ocupado

100 %−66.7 %=33.3 % sistema ocioso

b. ¿Cuál es la probabilidad que un cliente llegue y tenga que esperar,

porque el sistema está ocupado?



λ
pn=(1− )¿
u

100
p 1=(1− )¿
150

p 1=0.22=22%

c. ¿Cuál es el número promedio de clientes en la cola?

λ = 100/60 = 1.67 cliente por minuto

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Uploaded on
January 22, 2021
Number of pages
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2020/2021
Type
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Diego gambarini
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