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Ecologist: The incidence of alligator attacks on humans in the vicinit

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Ecologist: The incidence of alligator attacks on humans in the vicinit  [#permalink]

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New post 13 Jul 2018, 03:26
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Ecologist: The incidence of alligator attacks on humans in the vicinity of the Blue Lagoon has increased in recent years. Relocating at least half of the Blue Lagoon`s alligator population would help decrease the incidence of alligator attacks on humans.

The ecologist`s claim relies on which of the following assumptions?


A. Alligators prefer humans to other food sources.

B. There is a correlation between the size of the alligator population and the incidence of alligator attacks on humans.

C. In recent years, there has been no significant change in the size of the alligator population in the Blue Lagoon.

D. Not all alligator attacks on humans are reported to authorities.

E. Relocating half of the lagoon`s alligator population would not be prohibitively expensive.

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Re: Ecologist: The incidence of alligator attacks on humans in the vicinit  [#permalink]

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New post 13 Jul 2018, 03:44
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Bunuel wrote:
Ecologist: The incidence of alligator attacks on humans in the vicinity of the Blue Lagoon has increased in recent years. Relocating at least half of the Blue Lagoon`s alligator population would help decrease the incidence of alligator attacks on humans.


Conclusion :
Less the size of alligator in the vicinity, less the incidence of alligator attacks on humans

B. There is a correlation between the size of the alligator population and the incidence of alligator attacks on humans. --> Correct, negate the statement and see how the conclusion fall apart

Hence, B.
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Ecologist: The incidence of alligator attacks on humans in the vicinit  [#permalink]

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New post 13 Jul 2018, 04:13
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Premise

Increased Alligator attacks on humans in recent years.

Conclusion

Decreasing number of Alligators would help decrease the incidence of alligator attacks on humans.

Assumption

Less number of Alligators => Fewer incidences of Alligator attacks.

Bunuel wrote:
Ecologist: The incidence of alligator attacks on humans in the vicinity of the Blue Lagoon has increased in recent years. Relocating at least half of the Blue Lagoon`s alligator population would help decrease the incidence of alligator attacks on humans.

The ecologist`s claim relies on which of the following assumptions?

A. Alligators prefer humans to other food sources.

B. There is a correlation between the size of the alligator population and the incidence of alligator attacks on humans.
This is the only answer choice that helps me bridge the gap between the conclusion and premise of the question stem.

C. In recent years, there has been no significant change in the size of the alligator population in the Blue Lagoon.

D. Not all alligator attacks on humans are reported to authorities.

E. Relocating half of the lagoon`s alligator population would not be prohibitively expensive.


Correct answer: Option (B)


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Re: Ecologist: The incidence of alligator attacks on humans in the vicinit  [#permalink]

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New post 15 Jul 2018, 05:20
Ecologist: The incidence of alligator attacks on humans in the vicinity of the Blue Lagoon has increased in recent years. Relocating at least half of the Blue Lagoon`s alligator population would help decrease the incidence of alligator attacks on humans.

Type- Assumptions
Boil it down - Relocating at least half of the Blue Lagoon`s alligator population would help decrease the incidence of alligator attacks on humans.

A. Alligators prefer humans to other food sources. - Incorrect - Alligators might just attack and not eat humans

B. There is a correlation between the size of the alligator population and the incidence of alligator attacks on humans. - Correct - On negating this the argument falls apart

C. In recent years, there has been no significant change in the size of the alligator population in the Blue Lagoon. - Incorrect

D. Not all alligator attacks on humans are reported to authorities. - Incorrect - it only tells that ACTUAL numbers are higher

E. Relocating half of the lagoon`s alligator population would not be prohibitively expensive. - Irrelevant

Answer B
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Re: Ecologist: The incidence of alligator attacks on humans in the vicinit &nbs [#permalink] 15 Jul 2018, 05:20
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