Chapter 13 MM1 and MG1

Question 1

waiting line is also known as

Answer 1

waiting queue

Question 2

MM1 is what type of server and line

Answer 2

single server and single line

Question 3

what is the parameter lambda and distribution it follows

Answer 3

this is the arrival rate and follows poisson

Question 4

what is the parameter mue and distribution it follows

Answer 4

this is the service rate and follows negative exponential

Question 5

for mm1 what is relation between mue and lambda (2)

Answer 5

mue must be > lambda and of the same units

Question 6

What is not allowed in Queueing Model (3)

Answer 6

Bulking
Reneging
Jockeying

Question 7

not allowed in any queueing model: Bulking

Answer 7

customer refuse to join line

Question 8

not allowed in any queueing model: Reneging

Answer 8

customer enter a queue then leave before being served

Question 9

not allowed in any queueing model: Jockeying

Answer 9

Customers switch from one queue to another queue to receive service quickly

Question 10

Pw or U (4)

Answer 10

arriving unit has to wait to be served in system
server is busy in system
customer has to wait in system
average number of customers being served in system

Question 11

Pw or U > 1

Answer 11

Queue grow without ending

Question 12

Pw or U < 1

Answer 12

Queue grow on diminishing

Question 13

Pw or U = 1

Answer 13

Queue length remains constant

Question 14

Pn

Answer 14

Probability n customers in the queuing system

Question 15

Lq

Answer 15

average number of customers in waiting line, queue length, waiting to be served

Question 16

L

Answer 16

average number of units in system (waiting to be served)

Question 17

Wq

Answer 17

average time customer spends waiting in queue line to be served

Question 18

W

Answer 18

average wait time customer spends in total queuing system.

Question 19

Po

Answer 19

probability there are no customers in system

Question 20

MG1 Model main difference

Answer 20

service rate is not negative exponential distribution

Question 21

MG1 Service rate is (3)

Answer 21

undefined, arbitrary, unspecified

Question 22

Service rate distribution follows

Answer 22

mean mue and variance (sigma^2)

Question 23

If sigma is in question you know it is a ___model and not ____model

Answer 23

MG1 and not MM1

Question 24

What if the service rate is constant

Answer 24

then the standard deviation is zero.