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| Q.18 | In car washing shop, car arrives according to the Poisson’s distribution with a mean rate of 5 cars per hour. Washing time per car is exponential with a mean of 10 minutes. At steady state, average waiting time in a queue is: | |
| Ans | 1. 5 minutes | |
| 2. 50 minutes | ||
| 3. 10 minutes | ||
| 4. 40 minutes |
Correct Ans: 2
