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

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Senior Manager
Joined: 19 Feb 2007
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Y has been believed to cause Z. A new report, noting that Y [#permalink]

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10 Jul 2007, 11:08
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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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Senior Manager
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10 Jul 2007, 11:20
A is good

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Manager
Joined: 29 May 2007
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10 Jul 2007, 11:33
I vote for A

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Senior Manager
Joined: 06 Jul 2004
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Location: united states

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10 Jul 2007, 12:43
sidbidus 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.

A looks good, unless it's a booby trap....
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afraid of loosing , there is another person who
keeps making mistakes and succeeds..

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Director
Joined: 17 Sep 2005
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10 Jul 2007, 20:04
Straight A.

- Brajesh

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Senior Manager
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10 Jul 2007, 20:23
vote for A as well.

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Director
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11 Jul 2007, 02:30
I am for 'A'.

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Manager
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11 Jul 2007, 17:21
A for me

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Senior Manager
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12 Jul 2007, 10:37
OA -> (A)

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Director
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12 Jul 2007, 11:39
Late but yeah only A supports the new report.

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12 Jul 2007, 11:39
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