Go-Fast Travel Agency (GFT) has a phone reservation system with 5 lines answered
ID: 444403 • Letter: G
Question
Go-Fast Travel Agency (GFT) has a phone reservation system with 5 lines answered by one travel agent. That means 4 customers can be placed on hold while one is being served. If all 5 lines are in use, a new caller will get a busy signal. Potential customers call GFT on average every 15 minutes (exponential distribution). An average phone call lasts 12 minutes (exponential distribution). Answers are in bold but I need step by step on how to get the answers.
12. What is the queueing model for this problem?
a. M/M/1 queue
b. M/M/s queue
c. ***M/M/1/C (finite capacity/finite queue)
d. M/M/1/FP (finite population queue)
13. What percentage of phone calls receives a busy signal?
a. 1.9200%
b. 1.5873%
c. 3.2626%
d. ***8.8819%
14. What is the average number of phone lines in use?
a. 1.2063 lines
b. 0.9048 lines
c. 1.2984 lines
d. ***1.8683 lines
15. On average per hour, how many customers cannot get through to the travel agent?
a. ***0.3553 customers per hour
b. 0.0978 customers per hour
c. 0.0576customers per hour
d. 0.0476 customers per hour
16. On average, how long must a customer wait before his/her call is answered?
a. ***18.76 minute
b. 14.47 minutes
c. 8.39 minutes
d. 12.94 minutes
Explanation / Answer
Go-Fast Travel Agency (GFT) has a phone reservation system with 5 lines answered
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