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Y has been believed to cause Z. A new report, noting that Y

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Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 04 Aug 2008, 11:30
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Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 04 Aug 2008, 13:20
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lordw wrote:
Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z. -> says in the absense of Y Z occurs
(B) In cases where X occurs, followed by Y, Y is usually followed by Z. ->weakens
(C) In cases where Y occurs but X does not, Y is usually followed by Z. -> this opposes the suggestion
(D) In cases where Y occurs but Z does not, Y is usually preceded by X. -> thsi is irrelevant
(E) In cases where Z occurs, it is usually preceded by X and Y. -> does not say Y does not cause Z


To prove : X not Y causes Z

hence (A) is apt for this proof
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 05 Aug 2008, 01:32
we need to prove the situation where X occurs but not Y, followed by Z. Hence A will be correct choice
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Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 17 Aug 2009, 09:21
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Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.

Do Not Give Ans Without Explanation.
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Re: XYZ [#permalink]

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New post 17 Aug 2009, 10:53
1
apramanik wrote:
Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.

Do Not Give Ans Without Explanation.



The answer is A. The news reports claim X as cause for Z , but the belief is Y is the cause to Z. A suggests that X occurs followed by Z and Y doesnt occur at all which clearly supports the argument that X can be the root cause of Z instead of the belief that Y is.
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Re: XYZ [#permalink]

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New post 17 Aug 2009, 16:18
Answer looks A to me as well

A- In cases where X occurs but Y does not, X is usually followed by Z
X is occuring and Y is not ,i.e. X-> Z
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Re: XYZ [#permalink]

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New post 17 Aug 2009, 16:55
A, best supports the hypothesis, because if y doesn't happen but Z is preceded by X, then suggest that X might caused Z instead of Y
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Re: XYZ [#permalink]

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New post 18 Aug 2009, 05:22
A for me too. agree with the above explanations.. post the OA
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Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 07 Sep 2012, 13:10
Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.
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Re: Y has been believed to cause Z. A new report, noting [#permalink]

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New post 07 Sep 2012, 14:38
A it is.

1)Y has been believed to cause Z (Y -> Z)
2)A new report, noting that Y and Z are often observed to be preceded by X; ( X -> [Z,Y])
3.)Conclusion :suggests that X, not Y, may be the cause of Z. (X -> Z)
To support new suggestion, Z must be preceded by X.


(A) In cases where X occurs but Y does not, X is usually followed by Z. ( X-> Z); this is true since Y=null
(B) In cases where X occurs, followed by Y, Y is usually followed by Z. (X->Y->Z this violates point 3.
(C) In cases where Y occurs but X does not, Y is usually followed by Z. (Y->Z) this does not strenthen conclusion coz x is missing.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.(z is missing)
(E) In cases where Z occurs, it is usually preceded by X and Y. (X,Y -> Z) it is reversed and is incorrect.
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Re: Y has been believed to cause Z. A new report, noting [#permalink]

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New post 08 Sep 2012, 04:20
conty911 wrote:
A it is.

1)Y has been believed to cause Z (Y -> Z)
2)A new report, noting that Y and Z are often observed to be preceded by X; ( X -> [Z,Y])
3.)Conclusion :suggests that X, not Y, may be the cause of Z. (X -> Z)
To support new suggestion, Z must be preceded by X.


(A) In cases where X occurs but Y does not, X is usually followed by Z. ( X-> Z); this is true since Y=null
(B) In cases where X occurs, followed by Y, Y is usually followed by Z. (X->Y->Z this violates point 3.
(C) In cases where Y occurs but X does not, Y is usually followed by Z. (Y->Z) this does not strenthen conclusion coz x is missing.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.(z is missing)
(E) In cases where Z occurs, it is usually preceded by X and Y. (X,Y -> Z) it is reversed and is incorrect.


Thanks dear, I have read the question incompletely and based on that I have made my decision. But you explaination work for me.
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 24 Oct 2013, 16:37
apramanik wrote:
Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.
Which of the following further observations would best support the new report’s suggestion?
(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.

Do Not Give Ans Without Explanation.


OK, this one now.

Y has been believed to cause Z. A new report, noting that Y and Z are often observed to be preceded by X, suggests that X, not Y, may be the cause of Z.

So we need to find the case where X ---> Z not Y.

(A) In cases where X occurs but Y does not, X is usually followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.
(E) In cases where Z occurs, it is usually preceded by X and Y.

A is what we are looking for.
Happy to discuss

Cheers!
J :)
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 24 Oct 2013, 19:15
We know that before the report it was
Y leads to Z.
The report suggests that
X leads to Z and not Y.

(A) In cases where X occurs but Y does not, X is usually followed by Z.--- CORRECT, the answer choice clearly shows that X leads to Z because Y does not occur and still X is followed by Z.
(B) In cases where X occurs, followed by Y, Y is usually followed by Z.--- No information about whether X or Y leads to Z. Incorrect.
(C) In cases where Y occurs but X does not, Y is usually followed by Z.--- Incorrect, because the answer choice suggest Y leads to Z. But we want X leads to Z.
(D) In cases where Y occurs but Z does not, Y is usually preceded by X.---- Incorrect, because Only gives information that Y is preceded by X. Also implies that neither Y nor X leads to Z.
(E) In cases where Z occurs, it is usually preceded by X and Y.--- Again no info about which out of X or Y leads to Z.
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 22 Jun 2016, 12:00
The question's OA is indeed A

Added to the 1st post. :)

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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 06 Jul 2017, 09:12
Merged topics. Please, search before posting questions!
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Re: Y has been believed to cause Z. A new report, noting that Y [#permalink]

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New post 09 Nov 2017, 08:20
A because we need to get Y out of the equation to prove Y ain't it :)
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Re: Y has been believed to cause Z. A new report, noting that Y   [#permalink] 09 Nov 2017, 08:20
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