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# Dr. A: The new influenza vaccine is useless at best and

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Senior Manager
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Dr. A: The new influenza vaccine is useless at best and [#permalink]

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17 Jan 2008, 20:05
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Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.

In which of the following is the reasoning most similar to that of Dr. A?

(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.

(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.

(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.

(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.

(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

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Re: CR-dr. A and B [#permalink]

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17 Jan 2008, 21:47
vscid wrote:
Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.

In which of the following is the reasoning most similar to that of Dr. A?

(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.

(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.

(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.

(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.

(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

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I would go for B

Here is my reasoning.... A is arguing for something which is has no evidence for... On the oher hand, B is giving a concrete reason to disabuse him. However A again counter attack without any evidence to actually arrack the argument itself...

Its the same as B, where no evidence why author doesn't trust Jersey...
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Re: CR-dr. A and B [#permalink]

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18 Jan 2008, 00:06
A's argument is basically "eventhough X says this, I don't believe it"

A. Is proved by facts so it's fairly logical
B. Correct "eventhough JJ says it, I don't like it"
C. Logical reasoning and no rejection
D. Recommened and using the balls
E. Common trait and therefore he expects the trait to continue.
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Re: CR-dr. A and B [#permalink]

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18 Jan 2008, 00:48
Dr. A concludes the studies are faulty because the vaccine is worthless. His conclusion is not based on the facts, but it is based on the supposition that the vaccine is worthless, so the study must be faulty.

In order to find the answer, look out for the answer that has this kind non-implicit reasoning.

(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe. (Patients are harmed by vaccine – This answer choice has effective reasoning – eliminate it)

(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk. (Here, since I don’t trust Jersey, I think milk is faulty – not a direct reasoning – Hold it)

(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls. (Tennis ball is far effective than others, so it performs best - This answer choice has effective reasoning – eliminate it)

(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good. (Doctors recommends vim vitamins more than any other - This answer choice has effective reasoning – eliminate it)

(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT. (Since University students score effectively 20% higher, so it is imperative that Sheila also scores above 20% - This answer choice has effective reasoning – eliminate it)

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Re: CR-dr. A and B [#permalink]

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18 Jan 2008, 12:07
Vote for C

Dr.A seems to have tried the new vaccine and has inderstood that it's useless. Most likely that he has something better, so it's C.
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Re: CR-dr. A and B [#permalink]

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18 Jan 2008, 13:01
I'm going with C. Dr A believes that the new vaccine is worthless for no reason and nothing is going to change his mind. It's not that he is doubting the vaccine because he's doubting the Journal, but he is doubting the Journal conclusions because he is doubting the vaccine. Statement C says that Wingzz perform better because they are more effective (or perform better) - no evidence.
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Re: CR-dr. A and B [#permalink]

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20 Jan 2008, 11:53
OA is C.
for the reasons given by maratikus and quad.
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Re: CR-dr. A and B   [#permalink] 20 Jan 2008, 11:53
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