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# Because visual inspection cannot reliably distinguish

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Manager
Joined: 16 Oct 2006
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Because visual inspection cannot reliably distinguish [#permalink]

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02 Nov 2006, 22:16
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Because visual inspection cannot reliably distinguish certain skin discolorations from skin cancers, dermatologists at clinics have needed to perform tests of skin tissue taken from patients. At Westville Hospital, dermatological diagnostic costs were reduced by the purchase of a new imaging machine that diagnoses skin cancer in such cases as reliably as the tissue tests do. Consequently, even though the machine is expensive, a dermatological clinic in Westville is considering buying one to reduce diagnostic costs.

Which of the following would it be most useful for the clinic to establish in order to make its decision?

A. Whether the visits of patients who require diagnosis of skin discolorations tend to be shorter in duration at the clinic than at the hospital
B. Whether the principles on which the machine operates have been known to science for a long time
C. Whether the machine at the clinic would get significantly less heavy use than the machine at the hospital does
D. Whether in certain cases of skin discoloration, visual inspection is sufficient to make a diagnosis of skin cancer
E. Whether hospitals in other parts of the country have purchased such imaging machines
If you have any questions
New!
Senior Manager
Joined: 05 Aug 2005
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02 Nov 2006, 22:50
looks D to me....
if visual inspection is NOT sufficient to make a diagnosis of skin cancer, then additional test will be needed, which will increase the cost not reduce
Director
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02 Nov 2006, 22:54
I see C !
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"Education is what remains when one has forgotten everything he learned in school."

VP
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03 Nov 2006, 01:30
C for me too.

The hospital can reduce cost because of heavy use. For a small clinic, however, it may not be fully used to justify its high price.
VP
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03 Nov 2006, 17:04
C for me too.

If the clinic uses the machine less frequently than the hospital does , then buying may not be a good business proposition for the clinic.
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Senior Manager
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03 Nov 2006, 19:51
ak_idc wrote:
C for me too.

If the clinic uses the machine less frequently than the hospital does , then buying may not be a good business proposition for the clinic.

I fell for the trap D

I can always narrow the answer down to 2 choices, but I have often selected the wrong answer. Does it happen to you guys too? Whats the best way to deal with this?
Director
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03 Nov 2006, 20:23
I did not like the question.

A, B, D and E are completely irrevelant.
Left with C.
Senior Manager
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Re: CR - 17/23 - Skin Discoloration [#permalink]

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03 Nov 2006, 21:05
choice c.

what's the oa?
Manager
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03 Nov 2006, 22:08
C
VP
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03 Nov 2006, 22:13
uvs_mba wrote:
ak_idc wrote:
C for me too.

If the clinic uses the machine less frequently than the hospital does , then buying may not be a good business proposition for the clinic.

I fell for the trap D

I can always narrow the answer down to 2 choices, but I have often selected the wrong answer. Does it happen to you guys too? Whats the best way to deal with this?

hey Uvs, that happens to everybody. Dont worry abt that .

Options in GMAT are given in 3:2 ratio. I read some where. In this type of questions we need to be careful abt scope.
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

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07 Nov 2006, 00:38
U guys are gr8...I also fell in D trap:)

07 Nov 2006, 00:38
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