GMAT Question of The Day: Critical Reasoning

GS
#1. February 3rd, 2007, at 5:00 PM.

no clue..

Take GMAT team, kindly provide the solution

bluebrain
#3. February 3rd, 2007, at 7:35 PM.

A

Everything else constant, A is better for testing false positive

Kavya
#4. February 3rd, 2007, at 10:20 PM.

A
If all the test have same propotion of false -ve results, the it is reasonable to conclude that doctors must consider results with lowest false +ve.

V Pat
#5. February 4th, 2007, at 2:08 AM.

C. In treating spina bifida patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.

Valmik
#6. February 4th, 2007, at 6:27 AM.

A. All laboratory tests to detect spina bifida have the same proportion of false negative results.

JD
#7. February 6th, 2007, at 1:42 AM.

A

kartik
#8. February 6th, 2007, at 3:20 PM.

C. In treating spina bifida patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.

Pramod
#9. February 3rd, 2008, at 10:08 AM.

B.
Lowest proportion of false +ve tests indicate the disease.

SS
#10. February 3rd, 2008, at 2:30 PM.

A

Atul
#11. February 3rd, 2008, at 5:00 PM.

C

Take GMAT team, Please provide the solution.

Thnx

ll
#12. February 3rd, 2008, at 10:11 PM.

A

nitin
#13. February 3rd, 2008, at 11:54 PM.

Definitely A

A. All laboratory tests to detect spina bifida have the same proportion of false negative results.

REASON:
If all laboratory tests give the same proportion of false negative results, then the ones that give the lowest proportion of false positive results are indeed the more reliable ones.

REASON why it is NOT C:
Since it is essential to begin treatment as early as possible, physicians should use the laboratory test that have the lowest proportion of false NEGATIVE results (i.e. – indicates that a fetus does not have spina bifida when, in fact, it does).
Therefore, the argument does not hold true for false POSITIVE results as it will be contradictory

AG
#14. February 4th, 2008, at 12:46 AM.

B

AG
#15. February 4th, 2008, at 12:51 AM.

Here, the assumption is that the recommended laboratory test, which is in this case is the one with having lowest false positive results, has no more side effects than caused by the current tests. So, I presume
that the answer is B.

Srinivas
#16. February 4th, 2008, at 6:15 AM.

my answer is B.

What is the correct answer ?

daveparthiv
#17. February 4th, 2008, at 12:16 PM.

I agree with AG… IMO B too.

Siva
#18. February 4th, 2008, at 12:26 PM.

B

KA
#19. February 4th, 2008, at 1:27 PM.

Its a battle between A and B. IMO B is the winner as it takes off the unstated assumption of the causal argument.
Can we have the OA plz?

AG
#20. February 4th, 2008, at 6:15 PM.

Take the GMAT, pls give the answer.

Keshav
#21. February 4th, 2008, at 6:20 PM.

The Ans is surely option A
a false +ve and false -ve results indicates the error is reports.
An equal no. of false -ve results across all types of test indicates that one side (i.e. the negative side of +/-) is equal for all of the tests.
If any test which has the least false +ve proportion will give the least amount of errors in testing.
therefore A supports the recommendation

uma
#22. February 5th, 2008, at 12:45 PM.

Take the GMAT, pls give the answer.

N
#23. February 5th, 2008, at 3:58 PM.

Answer please ……………………………….

AG
#24. February 5th, 2008, at 6:38 PM.

Take the GMAT,

Would you be so kind enough to give the answer to this question.

sriram
#25. February 7th, 2008, at 2:23 AM.

Believe its E.

Rajib Banerjee
#26. February 8th, 2008, at 3:29 AM.

B is my bet

B)The laboratory test that has the lowest proportions of false positive results causes the same minor side effects as do the other laboratory tests used to detect spina bifida

Reason
=======
It encourages the use of laboratory test that provides the lowest proportions of false positive results.

KA
#27. February 9th, 2008, at 9:54 AM.

GMAT Team pls provide with the answer

Akshit Bajaj
#28. July 27th, 2008, at 5:14 PM.

Hey Gmat team… you guys are getting too slow in providing with the answers… please expedite the process…. thanks

I say the answer is choice A

shyam
#29. July 27th, 2008, at 7:15 PM.

Think its E.

jaspreet
#30. July 27th, 2008, at 9:02 PM.

Answer is C

Dharm
#31. July 27th, 2008, at 11:23 PM.

I will go for the option D

yash
#32. July 27th, 2008, at 11:47 PM.

A

Other choices dont make much sense to me.

Take GMAT, your intervention required.

Latha
#33. July 28th, 2008, at 9:51 AM.

My Ans B,
Whats the OA.
Its B because , its the only option which says that there is a method to reduce the false diagnosis but with side effects similar to other tests. Hence, it supports the statement mentioned .

brij
#34. July 28th, 2008, at 10:42 AM.

ans is A

Immanuel Ashok
#35. July 28th, 2008, at 11:45 AM.

The answer to this question is A.

udit
#36. July 28th, 2008, at 12:23 PM.

I think the answer is A

Pash
#37. July 28th, 2008, at 12:27 PM.

Ans is D

san
#38. July 28th, 2008, at 12:54 PM.

Answer is C : Reason – Take no risk
Even if the disease is detected when not in fact present, the treatment can start (false positive)
Other way round – No treatment begins though there is disease present – result – late treatment – may be fatal (false negative)
thus, prefer false positive to be safe

san
#39. July 28th, 2008, at 12:59 PM.

sorry agree with A
C is wrong

Gurvinder30
#40. July 28th, 2008, at 9:04 PM.

Lets remove the option not correct

A: As physicians sud choose Lab test that has lowest propotion of false +ve results but in A it has same propotion of -ve results so does not support

B: it is not supporting bcoz the ans sud support lowest prportion of false +ve results but B is saying that it has some side effects which is against.

C: No clue about it in discussion

D: It is talking about inconclusive test and I dont think it supports

E: SUd be the right ans.

The Don
#41. July 28th, 2008, at 9:18 PM.

If the treatment has no ill-effects, the false positive test should ALWAYS be used.

Keep in mind the proportion is irrelevant, since if you have all the same proportion, and the treatment has sideffects if you don’t have spida bifida…why would you risk that if positive or negative? Side effects can sometimes be worse than the disease itself!

Also, you have to keep in mind, what BEST supports the conclusion.

surabhi
#42. July 29th, 2008, at 5:59 PM.

GMAT team..please provide the answer

Pawan
#43. August 4th, 2008, at 4:25 PM.

A

Vamsi Krishna Kanuri
#44. August 7th, 2008, at 10:30 AM.

E is the answer.

Reasoning:

First we need to understand the conclusion. The conclusion here means that, the treatment would be accurate if the low false positive results are considered. That is false positive results are the only ones that are troubling the physicians. The strengthen their conclusion, we need to say show that, even the small portion of those false positive results donot subdue the physicians treatment. E rightly conveys that. According to the view stated in E, even though a treatment is given to those who are tested false positive, it would not be affecting them.

Kuldeep Sharma
#45. November 12th, 2008, at 2:22 AM.

As per my calculation the naswer should be B

duke
#46. December 6th, 2008, at 8:43 PM.

Official Ans:
The most accurate test for pironoma would be the one with the fewest false results. If all tests have the same proportion of false negatives, then the most accurate is the one that has the lowest proportion of false positives. Thus, (D) supports the recommendation and is the best answer. Choices that deal with the treatment for pironoma and are irrelevant to the accuracy of tests for pironoma. Option that deals with the side effects of tests for pironoma, and does not address their accuracy.

Daabs1
#47. February 25th, 2009, at 9:49 AM.

The best Answer choice is D.. all the rest is utterly ridiculous and makes no sense….

Nirmal
#48. September 7th, 2009, at 9:40 PM.

The answer is A.

Its quite simple.

B-> Does not say anything False Negative. A particular treatment can low false positive but very high false negatives.
C-> Actually does support more of False positives. It is better to detect early than not to. So detecting the disease even though it is not there might help in treating it.
D-> Does not support False positive nor false negative.
E-> Strongly support False Negative. Since the treatment does not have any damagind side effects, it is ok to have a high false negative. However it does not say anything about False Positive.

Which leaves us with Option A. Correct me if I am wrong.

Tapas
#49. September 24th, 2009, at 3:42 AM.

B

JT
#50. February 6th, 2010, at 1:10 AM.

A.

JT
#51. February 6th, 2010, at 1:15 AM.

and my reasoning is, that there could be a test which is just always negative. This will have the lowest proportion of false positives (zero), but it will never actually detect the condition. Without A the conclusion is terrible.

BHANU
#52. February 6th, 2010, at 1:25 AM.

Answer is A for sure

aryan
#53. February 6th, 2010, at 1:51 AM.

D

Matt M
#54. February 6th, 2010, at 5:35 AM.

A, because the the physicians are concerned with accuracy

success
#55. February 7th, 2010, at 2:41 PM.

D