Problem 2: Waiting to take-off a) At an airport, 125 planes took off during an 8-hour period. The control tower keeps a list on its computer of planes that it has released from the gates and that are waiting in queue to take off. Based on this information, the average number of planes waiting to take-off was 5, with the average taken over the same 8-hour period. How long did the average plane wait to take off? b) Suppose the air-traffic controller tells you that the next day there are 150 planes scheduled to take off (a 20% increase) during the same 8 hours of the day. He then predicts that there will be 6 planes waiting on average. How many would you predict were waiting on average: Circle one: about 6 planes less than 6 planes more than 6 planes? Assume that overall conditions (weather, number of runways open) are the same during the two days. Explain your reasoning. c) The airport authorities are worried about noise and pollution caused by the large queue of planes sitting waiting for the runway, engines running. They propose to the air traffic controllers that planes not be released from the gate unless the number of planes waiting for the runway is less than or equal to 1. Critique this suggestion.

Problem 2: Waiting to take-off a) At an airport, 125 planes took off during an 8-hour period. The control tower keeps a list on its computer of planes that it has released from the gates and that are waiting in queue to take off. Based on this information, the average number of planes waiting to take-off was 5, with the average taken over the same 8-hour period. How long did the average plane wait to take off? b) Suppose the air-traffic controller tells you that the next day there are 150 planes scheduled to take off (a 20% increase) during the same 8 hours of the day. He then predicts that there will be 6 planes waiting on average. How many would you predict were waiting on average: Circle one: about 6 planes less than 6 planes more than 6 planes? Assume that overall conditions (weather, number of runways open) are the same during the two days. Explain your reasoning. c) The airport authorities are worried about noise and pollution caused by the large queue of planes sitting waiting for the runway, engines running. They propose to the air traffic controllers that planes not be released from the gate unless the number of planes waiting for the runway is less than or equal to 1. Critique this suggestion.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Concept explainers

Inventory Management

The supply chain is crucial to a firm's operations as it manages the inflow and outflow of products that are manufactured from the initial stage to the end product. It also considers the raw materials needed at different stages of production and when the work is in progress. Inventory management functions consist of ordering, storing, and procuring the organization's inventory like raw materials, factors, and finished products. It's also used for controlling the number of products for trade and helps manage the organization's inventory and stock. Inventory Management has been defined as having the right inventory, of the right volume, at the right cost.

Question

Problem 2: Waiting to take-off
a) At an airport, 125 planes took off during an 8-hour period. The control tower keeps a list on its
computer of planes that it has released from the gates and that are waiting in queue to take off.
Based on this inſormation, the average number of planes waiting to lake-off was 5, with the
average taken over the same 8-hour period. How long did the average plane wait to take off?
b) Suppose the air-traffic controller tells you that the next day there are 150 planes scheduled to take
off (a 20% increase) during the same 8 hours of the day. He then predicts that there will be 6
planes waiting on average. How many would you predict were waiting on average:
Circle one:
about 6 planes
less than 6 planes
more than 6 planes?
Assume that overall conditions (weather, number of runways open) are the same during the two
days. Explain your reasoning.
c) The airport authorities are worried about noise and pollution caused by the large queue of planes
sitting waiting for the runway, engines running. They propose to the air traffic controllers that
planes not be released from the gate unless the number of planes waiting for the runway is less
than or equal to 1.
Critique this suggestion.

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