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Quincy Brick Distributors believes that adding an additional brick loader will substantially improve the firm's productivity. He estimated that a 2-person crew loading each truck will double the lading rate from 4 rucks per hour to 8 trucks er hour. Analyze the effect on the queue of such a change, and compare the results to those achieved with one worker. What is the probability that there will be more than 3 trucks either being loaded or waiting?

1. The average number of trucks in line.

2. The average number of trucks in the system.

3. The average time that a truck waits before it is unloaded.

4. The average time that a truck spends in the system.

5. The utilization rate of the car wash.

6. The probability that no cars are in the system.