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In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
The statements above, if true, support which one of the following inferences?
(A) Among the blackbirds that survived the month-long study, there was no relation between size and age.
(B) Larger blackbirds of a given age are actually more likely to survive over a one-month period than are smaller blackbirds of the same age,
(C) Among blackbirds of the same size, a difference in age probably does not indicate a difference in chances of survival over a one-month period.
(D) Among blackbirds of the same age, a difference in size may not indicate a difference in chances of survival over a month-long period.
(E) With a larger sample of blackbirds, the percentage of smaller birds that survive a one-month period would be the same as the percentage of larger birds that survive.
The statements above, if true, support which one of the following inferences?
(A) Among the blackbirds that survived the month-long study, there was no relation between size and age.
(B) Larger blackbirds of a given age are actually more likely to survive over a one-month period than are smaller blackbirds of the same age,
(C) Among blackbirds of the same size, a difference in age probably does not indicate a difference in chances of survival over a one-month period.
(D) Among blackbirds of the same age, a difference in size may not indicate a difference in chances of survival over a month-long period.
(E) With a larger sample of blackbirds, the percentage of smaller birds that survive a one-month period would be the same as the percentage of larger birds that survive.
16 Nov 2021, 03:40
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In Yasukawa's month-long study of blackbirds, the percentage of smaller birds that survived the duration of the study exceeded the percentage of larger birds that survived. However, Yasukawa's conclusion that size is a determinant of a blackbird's chances of survival over a month-long period is probably mistaken, since smaller blackbirds are generally younger than larger ones.
(A) Among the blackbirds that survived the month-long study, there was no relation between size and age.
There was relation Younger birds were smaller
(B) Larger blackbirds of a given age are actually more likely to survive over a one-month period than are smaller blackbirds of the same age,
This can not be inferred on the basis of information in the passage
(C) Among blackbirds of the same size, a difference in age probably does not indicate a difference in chances of survival over a one-month period.
This is a trap- Conclusion says size is immaterial; however, age does play a role
(D) Among blackbirds of the same age, a difference in size may not indicate a difference in chances of survival over a month-long period.
Same age = no difference in chances of survival; So Age plays some role -Correct
(E) With a larger sample of blackbirds, the percentage of smaller birds that survive a one-month period would be the same as the percentage of larger birds that survive.
Not true
IMO (D) is correct
(A) Among the blackbirds that survived the month-long study, there was no relation between size and age.
There was relation Younger birds were smaller
(B) Larger blackbirds of a given age are actually more likely to survive over a one-month period than are smaller blackbirds of the same age,
This can not be inferred on the basis of information in the passage
(C) Among blackbirds of the same size, a difference in age probably does not indicate a difference in chances of survival over a one-month period.
This is a trap- Conclusion says size is immaterial; however, age does play a role
(D) Among blackbirds of the same age, a difference in size may not indicate a difference in chances of survival over a month-long period.
Same age = no difference in chances of survival; So Age plays some role -Correct
(E) With a larger sample of blackbirds, the percentage of smaller birds that survive a one-month period would be the same as the percentage of larger birds that survive.
Not true
IMO (D) is correct
20 Feb 2025, 01:50
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