Experimenting With the Simulation
00:00 In this lesson, you’re going to play around with the simulation and see if you can identify the minimum number of employees needed to attain the goal of 10 minutes or less wait times. One way to start the experiment is to try and max out the resources.
00:37 So now you can play around with different numbers of each position and see how much they affect the overall wait times. So for example, you can see with how quickly the ushers check tickets, they don’t have a drastic effect on how long the moviegoers are waiting.
Let’s go ahead and try that out with the cashiers. If you only had
1 cashier working, but had
100 servers—and let’s go back to
100 ushers, even though that we know that they don’t have a big effect. That goes ahead and increases the average wait time to
41 minutes and 17 seconds, from 3 minutes, which is huge.
You can think about this like at a grocery store, where you likely don’t have to wait to find a parking space or wait to select your goods, but you generally have to wait in line at the cashier. In this case, the checkout line at the register is the rate-limiting step and would be the focus for moving customers through the store quickly. Likewise, let’s see how the servers affect. So if you had
100 cashiers, only
1 server, and then
100 ushers, you can look and see that the average wait time drops down to
5 minutes and 52 seconds, which shows that the servers have a bit of an effect, but not as much as the cashiers. Keep in mind that only half the customers actually want to get food and affect the server resources.
02:36 If more moviegoers decided to go to the concessions area and request servers, they would likely have a greater effect. Feel free to experiment with different numbers of employees to see if you can get the average wait down to 10 minutes or less, but if you need a possible solution, you can look at the full code to see one way to do that.
02:55 Don’t be afraid to play around with how you put these parameters in either. You might notice that it’s tedious to continually enter in different numbers of positions, so this may be a good candidate for a loop to test out.
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