25 May Question 81) According to the information provided in Table 12-1, what is the average time spent by a person in this system?
Question
81) According to the information provided in Table 12-1, what is the average time spent by a person in this system?
A) 0.058 minute
B) 1.646 minutes
C) 0.521 minute
D) 0.183 minute
E) None of the above
82) According to the information provided in Table 12-1, what percentage of the total available service time is being used?
A) 72.0%
B) 28.0%
C) 56.3%
D) It could be any of the above, depending on other factors.
E) None of the above
83) Cars arrive at a local JLUBE franchise at the rate of 1 every 12 minutes. Service times are exponentially distributed with an average of 15 minutes. Jack Burns, the JLUBE owner, has decided to open a second work bay, i.e., make the shop into a two-channel system. Under this new scheme, the average customer will wait in an ________ line.
A) M/M/1
B) M/M/2
C) M/D/2
D) M/D/1
E) M/G/2
84) Cars arrive at a local JLUBE franchise at the rate of 1 every 12 minutes. Service times are exactly 15 minutes. Jack Burns, the JLUBE owner, has decided to open a second work bay, i.e., make the shop into a two-channel system. Under this new scheme, the average customer will wait in an ________ line.
A) M/M/1
B) M/M/2
C) M/D/2
D) M/D/1
E) M/G/2
85) Cars arrive at a local JLUBE franchise at the rate of 1 every 12 minutes. Service times are exponentially distributed with an average of 15 minutes. Jack Burns, the JLUBE owner, has decided to open a second work bay, i.e., make the shop into a two-channel system. Under this new scheme, the average customer will wait in line
A) approximately 9.6 minutes.
B) approximately 2.5 minutes.
C) approximately 24.6 minutes.
D) approximately 2.1 minutes.
E) None of the above
86) Cars arrive at a local JLUBE franchise at the rate of 1 every 12 minutes. Service times are exponentially distributed with an average of 15 minutes. Jack Burns, the JLUBE owner, has decided to open a second work bay, i.e., make the shop into a two-channel system. Under this new scheme, the total time an average customer spends in the system will be
A) 37 minutes.
B) 2.1 minutes.
C) 9.6 minutes.
D) 33.3 minutes.
E) 24.6 minutes.
Table 12-2
| M/M/2 | |
| Mean Arrival Rate: | 5 occurrences per minute |
| Mean Service Rate: | 3 occurrences per minute |
| Number of Servers: | 2 |
| Queue Statistics: | |
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