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# On some hot days the smog in Hillview

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Joined: 01 Jun 2015
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On some hot days the smog in Hillview  [#permalink]

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Updated on: 02 Feb 2019, 01:44
11
00:00

Difficulty:

95% (hard)

Question Stats:

39% (01:47) correct 61% (01:43) wrong based on 346 sessions

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On some hot days the smog in Hillview reaches unsafe levels, and on some hot days the wind blows into Hillview from the east. Therefore, on some days when the wind blows into Hillview from the east, the smog in Hillview reaches unsafe levels.

The reasoning in the argument is flawed in that the argument

A. mistakes a condition that sometimes accompanies unsafe levels of smog for a condition that necessarily accompanies unsafe levels of smog
B. fails to recognize that one set might have some members in common with each of two others even though those
two other sets have no members in common with each other
C. uses the key term “unsafe” in one sense in a premise and in another sense in the conclusion
D. contains a premise that is implausible unless the conclusion is presumed to be true
E. infers a particular causal relation from a correlation that could be explained in a variety of other ways

Originally posted by techiesam on 14 Jun 2017, 01:10.
Last edited by Skywalker18 on 02 Feb 2019, 01:44, edited 1 time in total.
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Re: On some hot days the smog in Hillview  [#permalink]

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14 Jun 2017, 10:18
2
1
1
On some hot days the smog in Hillview reaches unsafe levels, and on some hot days the wind blows into Hillview
from the east. Therefore, on some days when the wind blows into Hillview from the east, the smog in Hillview
reaches unsafe levels.

The reasoning in the argument is flawed in that the argument

A. mistakes a condition that sometimes accompanies unsafe levels of smog for a condition that necessarily accompanies
unsafe levels of smog -Nowhere in the argument we are given that "wind" is either a necessary or unnecessary condition.
B. fails to recognize that one set might have some members in common with each of two others even though those
two other sets have no members in common with each other -CORRECT. There can be a certain third event causing both the given events.
C. uses the key term “unsafe” in one sense in a premise and in another sense in the conclusion -Irrelevant
D. contains a premise that is implausible unless the conclusion is presumed to be true -The premise is always taken as is. In a flaw question, ALWAYS the conclusion is flawed. The premise is NEVER taken to be flawed. If GMAT says that sun rises from the west, then we MUST assume that the sun rises from the west.
E. infers a particular causal relation from a correlation that could be explained in a variety of other ways -There is no correlation established between the two events. In-fact the correlation itself is incorrect.
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Re: On some hot days the smog in Hillview  [#permalink]

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08 Dec 2018, 09:56
Another good LSAT question that I am bumping.
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Re: On some hot days the smog in Hillview  [#permalink]

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02 Feb 2019, 01:54
On some hot days the smog in Hillview reaches unsafe levels, and on some hot days the wind blows into Hillview from the east. Therefore, on some days when the wind blows into Hillview from the east, the smog in Hillview reaches unsafe levels.

Type-flaw
Core- on some days when the wind blows into Hillview from the east, the smog in Hillview reaches unsafe levels.
Pre-thinking- the two sets of days may share some members with hot days without sharing members with each other. In other words, these 2 sets of days(smoggy and easterly windy) may be mutually exclusive

A. mistakes a condition that sometimes accompanies unsafe levels of smog for a condition that necessarily accompanies unsafe levels of smog - incorrect; the argument absolutely does not claim that anything necessarily accompanies anything else
B. fails to recognize that one set might have some members in common with each of two others even though those- Correct
two other sets have no members in common with each other
C. uses the key term “unsafe” in one sense in a premise and in another sense in the conclusion- incorrect; the word 'unsafe' has not been used in a different sense in premise and conclusion
D. contains a premise that is implausible unless the conclusion is presumed to be true- incorrect; the premises are plausible
E. infers a particular causal relation from a correlation that could be explained in a variety of other ways- incorrect; there is no causal component in the conclusion

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Re: On some hot days the smog in Hillview   [#permalink] 02 Feb 2019, 01:54
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