Ali Baba's Car Wash Service Centre is open 6 days a week, but its busi

TokNeekCepTdh

TokNeekCepTdh

Answered question

2021-12-05

Ali Baba's Car Wash Service Centre is open 6 days a week, but its busiest day is always on Sunday. From the previous data, Ali Baba estimates that dirty cars arrive at the rate of one every two minutes, One car at a time is cleaned in this example of a single-channel waiting line. Assuming Poisson arrivals and exponential service times, find the following: 

1) Compute the average number of cars in line. 

2) Calculate the value of probability that there are no car in the system. 

3) Compute the average time that a car spends in the system.

Answer & Explanation

George Woody

George Woody

Beginner2021-12-06Added 16 answers

Introduction
The Poisson distribution can be established using the formula P(x)=mremr!
where r is the number of arrivals per unit time
P(x) is the probability of x arrivals
m is the average arrival rate.
Part 1
Let m be the mean car arrivals per hour and s be the mean number of cars serviced per hour.
It is given that new car arrives every 2 minutes so m=30 cars per hour
so the average number of cars in the line is given by:
Ls=msm=30s30
Part 2
The probability that there are no cars in the system is given by:
P0=1ms=130s
Part 3
Average time that a unit spends in the system is given by
Ws=1sm=1s30

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