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Updated on: 31 Jul 2025, 01:33
Originally posted by Sajjad1994 on 01 May 2020, 09:18.
Last edited by Bunuel on 31 Jul 2025, 01:33, edited 8 times in total.
Last edited by Bunuel on 31 Jul 2025, 01:33, edited 8 times in total.
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The airline that had the median tire failures per 1000 landings for the Pro Elite brand was Hero Airlines.: Yes
The airline that had the longest average maintenance interval also had the greatest tire age.: No
The tire brand with the highest average failures per 1000 landings across all reporting airlines also had the highest average tire age across all reporting airlines.: No
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
59% (02:33) correct
41%
(02:54)
wrong
based on 434
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History
Date
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Not Attempted Yet
As part of a routine safety audit of the airline industry, a government agency recently conducted a review of tire safety of 10 major airlines. While every airline met or exceeded government regulations for tire age and frequency of tire maintenance, the agency uncovered a significant amount of variation in tire failure rates among the airlines reviewed.
The table shows the results of the agency's review, including the average age of the tires on each airline's fleet (in months), the brand of the tires each airline uses, the average maintenance interval (in number of flights between maintenance visits), and number of tire failures per 1,000 landings.
For each of the following statements, select Yes if the statement is true based solely on the information reported in the table. Otherwise, select No.
The table shows the results of the agency's review, including the average age of the tires on each airline's fleet (in months), the brand of the tires each airline uses, the average maintenance interval (in number of flights between maintenance visits), and number of tire failures per 1,000 landings.
| Airline | Average Tire Age (months) | Brand | Average Maintenance Interval (flights) | Tire Failure per 1000 landings |
|---|---|---|---|---|
| Boulder Air | 7.1 | Grizzly Plus | 30 | 7.5 |
| Cruz Airlines | 7.8 | Future | 20 | 5.9 |
| EcoFlight | 4.5 | Pro Elite | 18 | 5.2 |
| Hero Airlines | 8.1 | Pro Elite | 25 | 6.5 |
| Maximum Air | 7.5 | Grizzly Plus | 22 | 8.3 |
| Mystic Airways | 9 | Grizzly Plus | 28 | 6.8 |
| Premier Airways | 6 | Pro Elite | 19 | 6.9 |
| Southern National | 6.4 | Future | 28 | 6.3 |
| Sun Airlines | 8 | Pro Elite | 24 | 6.8 |
| Troubadour Airlines | 6.2 | Pro Elite | 23 | 6 |
For each of the following statements, select Yes if the statement is true based solely on the information reported in the table. Otherwise, select No.
The next three questions based on this stem can be found here.
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| Yes | No | |
| The airline that had the median tire failures per 1000 landings for the Pro Elite brand was Hero Airlines. | ||
| The airline that had the longest average maintenance interval also had the greatest tire age. | ||
| The tire brand with the highest average failures per 1000 landings across all reporting airlines also had the highest average tire age across all reporting airlines. |
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Official Answer
The airline that had the median tire failures per 1000 landings for the Pro Elite brand was Hero Airlines.: Yes
The airline that had the longest average maintenance interval also had the greatest tire age.: No
The tire brand with the highest average failures per 1000 landings across all reporting airlines also had the highest average tire age across all reporting airlines.: No
02 Jun 2020, 04:52
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Disregard the explanations above because they are not addressing statement 3 properly. The question is asking about brand rather than airline. From a brand perspective, at first glance it looks like Grizzly will satisfy the statement. However, you cannot confidently confirm that Grizzly has the highest average tire age. Reason being is that Grizzly (and the other airlines) are selling tires to many different customers and if one customer buys many more/less tires than the other the average tire age will be weighted towards which ever customer buys the most. Given this, there is now way to confirm that statement 3 is correct with the information provided.
General Discussion
A)Yes,there are 5 airlines using Pro Elite brand tires with values as :
5.2,6,6.5,6.8,6.9..hence the median is 6.5,for which the airline is Hero Airlines
B)No,since brand with longest avg maintenance interval is Boulder Air while the brand with greatest tire Age is Mystic airways
C)No,since Maximum Air has highest avg failures per 1000 landings while avg tire Age is for mystic airways
Posted from my mobile device
5.2,6,6.5,6.8,6.9..hence the median is 6.5,for which the airline is Hero Airlines
B)No,since brand with longest avg maintenance interval is Boulder Air while the brand with greatest tire Age is Mystic airways
C)No,since Maximum Air has highest avg failures per 1000 landings while avg tire Age is for mystic airways
Posted from my mobile device
