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Consider a single server queuing model with Poisson arrivals (λ = 4/hour) and exponential service (μ = 4/hour). The number in the system is restricted to a maximum of 10. The probability that a person who comes in leaves without joining the queue is
  • a)
    1/11
  • b)
    1/10
  • c)
    1/9
  • d)
    1/2
Correct answer is option 'A'. Can you explain this answer?
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Consider a single server queuing model with Poisson arrivals (λ...

Probability that a person who comes in leaves without joining the queue i.e.
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Consider a single server queuing model with Poisson arrivals (λ...
Exponentially distributed interarrival times) and exponential service times. In this model, customers arrive at a rate of λ (mean interarrival time 1/λ) and are served at a rate of μ (mean service time 1/μ).

The behavior of this queuing system can be analyzed using the following parameters:

- λ: arrival rate (customers per unit time)
- μ: service rate (customers per unit time)
- ρ: traffic intensity (λ/μ)
- L: average number of customers in the system
- Lq: average number of customers in the queue
- W: average time a customer spends in the system
- Wq: average time a customer spends in the queue

To calculate these parameters, we can use the following formulas:

- ρ = λ/μ
- L = λ/(μ - λ)
- Lq = ρ^2/(1 - ρ)
- W = 1/(μ - λ)
- Wq = ρ/(μ - λ)

Note that these formulas assume that the system is stable, i.e., ρ < 1.="" if="" ρ="" ≥="" 1,="" the="" queue="" will="" become="" infinitely="" long="" and="" the="" system="" will="" not="" be="" able="" to="" handle="" the="" arrival="" />

These formulas provide insights into the behavior of the queuing system. For example, if ρ is high (close to 1), the system is heavily loaded and the queue is likely to be long. Conversely, if ρ is low (close to 0), the system is underutilized and there may be idle time for the server.

It is important to note that these formulas are based on certain assumptions, such as exponential interarrival and service times, and a single server. If these assumptions do not hold, more complex queuing models may be required to accurately analyze the system.
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Consider a single server queuing model with Poisson arrivals (λ = 4/hour) and exponential service (μ = 4/hour). The number in the system is restricted to a maximum of 10. The probability that a person who comes in leaves without joining the queue isa)1/11b)1/10c)1/9d)1/2Correct answer is option 'A'. Can you explain this answer?
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