Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Oct 2014, 07:25

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In tests for pironoma, a serious disease, a false positive

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 07 Feb 2007
Posts: 212
Followers: 2

Kudos [?]: 7 [0], given: 0

In tests for pironoma, a serious disease, a false positive [#permalink] New post 25 Mar 2007, 11:16
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.
Which of the following, if true, gives the most support to the recommendation above?
(A) The accepted treatment for pironoma does not have damaging side effects.
(B) The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma.
(C) In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.
(D) The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma.
(E) All laboratory tests to detect pironoma have the same proportion of false negative results.

OA later.
Manager
Manager
avatar
Joined: 22 Dec 2006
Posts: 77
Followers: 1

Kudos [?]: 3 [0], given: 0

 [#permalink] New post 25 Mar 2007, 22:29
B seems correct.
Senior Manager
Senior Manager
User avatar
Joined: 02 Sep 2006
Posts: 256
Followers: 1

Kudos [?]: 11 [0], given: 0

 [#permalink] New post 25 Mar 2007, 22:59
I choose B
Director
Director
avatar
Joined: 24 Aug 2006
Posts: 754
Location: Dallas, Texas
Followers: 5

Kudos [?]: 30 [0], given: 0

 [#permalink] New post 25 Mar 2007, 23:32
One and only (E)
_________________

"Education is what remains when one has forgotten everything he learned in school."

Manager
Manager
User avatar
Joined: 07 Feb 2007
Posts: 212
Followers: 2

Kudos [?]: 7 [0], given: 0

 [#permalink] New post 26 Mar 2007, 07:58
Swagatalakshmi wrote:
One and only (E)


OA is E. However, like those of above, my choice is B too.
Can Swagatalakshmi explain why is E rather than B please? Thank you
Manager
Manager
avatar
Joined: 14 Apr 2003
Posts: 85
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 27 Mar 2007, 07:01
wudy wrote:
Swagatalakshmi wrote:
One and only (E)


OA is E. However, like those of above, my choice is B too.
Can Swagatalakshmi explain why is E rather than B please? Thank you


That set of tests would have the most accurate results.
Intern
Intern
avatar
Joined: 18 Oct 2006
Posts: 20
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink] New post 27 Mar 2007, 19:27
It would be E...

The paragraph basically says that there are 2 types of false results for a pironoma test (either positive or negative)...

so, it would be wrong to say that the piranoma test with the lowest proportion of false POSITIVES would result in the most accurate test, simply because the test with the lowest proportion of false positives may also have the HIGHEST proportion of false NEGATIVES...

so for the statement to be accurate, the proportion of false negatives must be the same for every test... therefore making the only variable in the equation the proportion of false positives...
Manager
Manager
avatar
Joined: 26 Feb 2007
Posts: 115
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 27 Mar 2007, 19:34
E.
Senior Manager
Senior Manager
avatar
Joined: 24 Sep 2006
Posts: 281
Followers: 1

Kudos [?]: 5 [0], given: 0

 [#permalink] New post 27 Mar 2007, 20:44
E it is

with an example

False Neg: 100

False +ve : 10 using test1
False +ve : 5 using test2

the arg is saying use test2.

That is true only if FalseNeg is 100 for both test1 and test2. If test2 has say 40 falseneg then test1 is better

E is saying FalseNeg is 100 for both tests
_________________

AimHigher

Senior Manager
Senior Manager
avatar
Joined: 08 Feb 2006
Posts: 251
Schools: Ross, Kellogg, Darden (i/v)
Followers: 1

Kudos [?]: 8 [0], given: 0

 [#permalink] New post 27 Mar 2007, 23:01
If your read the argument carefully, a false negative is much more serious than a false positive. So ideally, one should go for a test with minimum number of false negative results. Since, the physicians have gone for the test with minimum number of false positive results, it is obvious that they had no control over minimum number of false negatives. Hence the best case scenario is that all tests have equal likelihood of false negative results.
Answer - E.
  [#permalink] 27 Mar 2007, 23:01
    Similar topics Author Replies Last post
Similar
Topics:
1 In tests for pironoma, a serious disease, a false positive SudiptoGmat 12 20 Jan 2010, 07:25
10 In tests for pironoma, a serious disease, a false positive rohansherry 12 22 Aug 2009, 06:35
In tests for pironoma, a serious disease, a false positive albertrahul 0 14 Jul 2008, 20:48
In tests for pironoma, a serious disease, a false positive notahug 5 02 Apr 2008, 13:54
In tests for pironoma, a serious disease, a false positive ayushi 6 11 Oct 2006, 08:20
Display posts from previous: Sort by

In tests for pironoma, a serious disease, a false positive

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.