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26 Jul 2024, 01:30
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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:
39% (01:41) correct
61%
(01:48)
wrong
based on 194
sessions
History
Date
Time
Result
Not Attempted Yet
The average age of university presidents in a large sample of universities is 62. The average age of university presidents in those same universities 25 years ago was approximately eight years younger. On the basis of those data, it can be concluded that university presidents, including those at online universities, in general tend to be older now.
Which of the following casts the most doubt on the conclusion drawn above?
(A) The dates when the university presidents assumed their current positions have not been specified.
(B) No information is given concerning the average number of years that university presidents remain in office.
(C) The information is based only on universities that have been operating for at least 25 years.
(D) Information concerning the exact number of universities in the sample has not been given.
(E) None of the answers provided cast doubt on the conclusion drawn above.
Which of the following casts the most doubt on the conclusion drawn above?
(A) The dates when the university presidents assumed their current positions have not been specified.
(B) No information is given concerning the average number of years that university presidents remain in office.
(C) The information is based only on universities that have been operating for at least 25 years.
(D) Information concerning the exact number of universities in the sample has not been given.
(E) None of the answers provided cast doubt on the conclusion drawn above.
26 Jul 2024, 22:14
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Which of the following casts the most doubt on the conclusion drawn above?
(A) The dates when the university presidents assumed their current positions have not been specified.
NOT CORRECT. The argument is about the current average age of the presidents. Not how long they have been in that position. Irrelevant.
(B) No information is given concerning the average number of years that university presidents remain in office.
NOT CORRECT. The argument is about the current average age of the presidents. Not how long they have been in that position. Irrelevant.
(C) The information is based only on universities that have been operating for at least 25 years.
CORRECT. A conclusion or observation based on a study done on a specific sub-group can not be generalised for the whole group.
(D) Information concerning the exact number of universities in the sample has not been given.
NOT CORRECT. The sample size is large as mentioned is enough to ensure the validity of the study. At least it doesn't cast doubt on the study
(E) None of the answers provided cast doubt on the conclusion drawn above.
NOT CORRECT.
(A) The dates when the university presidents assumed their current positions have not been specified.
NOT CORRECT. The argument is about the current average age of the presidents. Not how long they have been in that position. Irrelevant.
(B) No information is given concerning the average number of years that university presidents remain in office.
NOT CORRECT. The argument is about the current average age of the presidents. Not how long they have been in that position. Irrelevant.
(C) The information is based only on universities that have been operating for at least 25 years.
CORRECT. A conclusion or observation based on a study done on a specific sub-group can not be generalised for the whole group.
(D) Information concerning the exact number of universities in the sample has not been given.
NOT CORRECT. The sample size is large as mentioned is enough to ensure the validity of the study. At least it doesn't cast doubt on the study
(E) None of the answers provided cast doubt on the conclusion drawn above.
NOT CORRECT.
28 Jul 2024, 05:16
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To determine which option casts the most doubt on the conclusion that university presidents, including those at online universities, tend to be older now based on the provided data, let's analyze each option:
(A) The dates when the university presidents assumed their current positions have not been specified.
This information could be relevant, but it does not directly impact the conclusion about the average age now versus 25 years ago.
(B) No information is given concerning the average number of years that university presidents remain in office.
This might influence the average age at any given time, but it doesn't directly challenge the conclusion drawn from the comparative ages.
(C) The information is based only on universities that have been operating for at least 25 years.
This is the most significant point. If the data only includes universities that have been operating for at least 25 years, it excludes newer universities, particularly online universities which have become more prevalent in recent years. This exclusion means the data might not be representative of the current broader landscape of all university presidents, including those at newer institutions.
(D) Information concerning the exact number of universities in the sample has not been given.
While the exact number of universities could affect the robustness of the sample, it does not directly cast doubt on the conclusion about the age trend.
(E) None of the answers provided cast doubt on the conclusion drawn above.
This option implies that none of the other options affect the conclusion, which isn't the case here.
The option that casts the most doubt on the conclusion is:
(C) The information is based only on universities that have been operating for at least 25 years.
This casts doubt because it suggests the data might not be representative of the current entire population of university presidents, particularly excluding newer online universities, which could skew the average age trend.
(A) The dates when the university presidents assumed their current positions have not been specified.
This information could be relevant, but it does not directly impact the conclusion about the average age now versus 25 years ago.
(B) No information is given concerning the average number of years that university presidents remain in office.
This might influence the average age at any given time, but it doesn't directly challenge the conclusion drawn from the comparative ages.
(C) The information is based only on universities that have been operating for at least 25 years.
This is the most significant point. If the data only includes universities that have been operating for at least 25 years, it excludes newer universities, particularly online universities which have become more prevalent in recent years. This exclusion means the data might not be representative of the current broader landscape of all university presidents, including those at newer institutions.
(D) Information concerning the exact number of universities in the sample has not been given.
While the exact number of universities could affect the robustness of the sample, it does not directly cast doubt on the conclusion about the age trend.
(E) None of the answers provided cast doubt on the conclusion drawn above.
This option implies that none of the other options affect the conclusion, which isn't the case here.
The option that casts the most doubt on the conclusion is:
(C) The information is based only on universities that have been operating for at least 25 years.
This casts doubt because it suggests the data might not be representative of the current entire population of university presidents, particularly excluding newer online universities, which could skew the average age trend.
