Question: there are 4 lines, one for each service desk. lambda = 2 0 / hr and mu = 2 5 / hr . Calculate the

there are

4

lines, one for each service desk. lambda

= 20 /

hr and mu

= 25 /

.

Calculate the average number of waiting time

(

in minutes

)

for a customer before reaching the cashier. The average number of customers waiting in each line. And the average number of customers waiting in the checkout area all together

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