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09 Sep 2025, 03:51
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Among the airports that opened before 1960, the average number of international flights is greater than the average number of international flights at airports that opened in or after 1960.: True
Every airport with fewer than 40,000 domestic flights has at least 140,000 international flights.: True
The median number of international flights among airports opened before 1960 is greater than the median number of international flights among airports opened in or after 1960.: True
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
82% (03:05) correct
18%
(03:17)
wrong
based on 181
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A European transportation agency collected data on 10 major airports. The table records the year each airport was first opened, the year it was most recently renovated, and annual flight volumes.
For each of the following statements, select True if it is correct based on the table. Otherwise select False.
| Airport | Country | Year opened | Most recent renovation | International flights | Domestic flights | Total flights |
|---|---|---|---|---|---|---|
| Berlin Central | Germany | 1960 | 2019 | 210000 | 48000 | 258000 |
| Madrid Norte | Spain | 1928 | 2018 | 185000 | 67000 | 252000 |
| Helsinki West | Finland | 2001 | 2016 | 142000 | 21000 | 163000 |
| Paris Est | France | 1934 | 2020 | 225000 | 53000 | 278000 |
| Rome Sud | Italy | 1965 | 2014 | 198000 | 61000 | 259000 |
| Warsaw Hub | Poland | 1970 | 2017 | 133000 | 44000 | 177000 |
| Vienna Nord | Austria | 1912 | 2015 | 157000 | 29000 | 186000 |
| Zurich Alpen | Switzerland | 1954 | 2019 | 168000 | 37000 | 205000 |
| Lisbon Aero | Portugal | 1980 | 2013 | 121000 | 42000 | 163000 |
| Oslo Fjord | Norway | 1948 | 2012 | 149000 | 25000 | 174000 |
For each of the following statements, select True if it is correct based on the table. Otherwise select False.
| True | False | |
| Among the airports that opened before 1960, the average number of international flights is greater than the average number of international flights at airports that opened in or after 1960. | ||
| Every airport with fewer than 40,000 domestic flights has at least 140,000 international flights. | ||
| The median number of international flights among airports opened before 1960 is greater than the median number of international flights among airports opened in or after 1960. |
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Official Answer
Among the airports that opened before 1960, the average number of international flights is greater than the average number of international flights at airports that opened in or after 1960.: True
Every airport with fewer than 40,000 domestic flights has at least 140,000 international flights.: True
The median number of international flights among airports opened before 1960 is greater than the median number of international flights among airports opened in or after 1960.: True
Bunuel
• Among the airports that opened before 1960, the average number of international flights is greater than the average number of international flights at airports that opened in or after 1960.
There are five airports that opened before 1960 and five that opened in 1960 or later. Since the counts are equal, comparing the averages is the same as comparing the sums of international flights.
The total for the five before 1960 is 185,000 + 225,000 + 157,000 + 168,000 + 149,000 = 884,000.
The total for the five in 1960 or later is 210,000 + 198,000 + 133,000 + 142,000 + 121,000 = 804,000.
Because 884,000 is greater than 804,000, the average for airports opened before 1960 is greater.
Answer: True
• Every airport with fewer than 40,000 domestic flights has at least 140,000 international flights.
Domestic flights fewer than 40,000: Vienna (29,000; 157,000 international), Zurich (37,000; 168,000 international), Oslo (25,000; 149,000 international), Helsinki (21,000; 142,000 international).
All have at least 140,000 international.
Answer: True
• The median number of international flights among airports opened before 1960 is greater than the median number of international flights among airports opened in or after 1960.
Before 1960 international flights: Madrid 185,000; Paris 225,000; Vienna 157,000; Zurich 168,000; Oslo 149,000. Ordered: 149,000, 157,000, 168,000, 185,000, 225,000. Median = 168,000.
1960 or later international flights: Berlin 210,000; Rome 198,000; Warsaw 133,000; Helsinki 142,000; Lisbon 121,000. Ordered: 121,000, 133,000, 142,000, 198,000, 210,000. Median = 142,000.
168,000 > 142,000, so the statement is correct.
Answer: True
I29-110
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09 Sep 2025, 10:29
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True, True, True
