NEW HERE? LEARN MORE
closeclose
Last visit was: 26 Apr 2024, 04:59 It is currently 26 Apr 2024, 04:59
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

A pharmaceutical company tested a new painkiller on 1,000 lab rats tha

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
L
Sajjad1994
GRE Forum Moderator
Joined: 02 Nov 2016
Posts: 13961
Own Kudos [?]: 32938 [17]
Given Kudos: 5778
GPA: 3.62
Send PM
CAT Tests Forum Quiz Mode
A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   Updated on: 19 Apr 2021, 07:42
6
Kudos
11
Bookmarks
Expert Reply
00:00
A
B
C
D
E

Difficulty:

45% (medium)

Question Stats:

62% (01:35) correct 38% (01:45) wrong based on 406 sessions
Hide Show timer Statistics
A pharmaceutical company tested a new painkiller on 1,000 lab rats that were fed large doses of the painkiller for a two-month period. By the end of the experiment, 39 of the rats had died. The company concluded that the painkiller was sufficiently safe to test on humans.

Which of the following, if true, provides the most support for the pharmaceutical company’s conclusion?

A. The amount of painkiller fed to the rats was substantially greater, in relation to body mass, than the dosage any human would take under normal circumstances.

B. Because of the different body chemistry of humans and rats, some compounds can be dangerous for rats but safe for humans, and vice versa.

C. Tests of this same painkiller on dogs showed that 3 out of 50 dogs developed lesions on their livers during the course of the experiment.

D. The researchers found that during the experiment, the rats showed a significantly lower sensitivity to pain than rats do under normal circumstances.

E. In an experiment of this length with this number of rats, it is not unusual for up to 50 rats to die during the experiment for reasons unrelated to the experiment itself.

Source: McGraw-Hill's
ShowHide Answer
Official Answer
E

Originally posted by Sajjad1994 on 26 Feb 2017, 08:27.
Last edited by Sajjad1994 on 19 Apr 2021, 07:42, edited 3 times in total.
User avatar
S
Alexey1989x
Manager
Manager
Joined: 05 Dec 2016
Posts: 194
Own Kudos [?]: 88 [0]
Given Kudos: 49
Concentration: Strategy, Finance
GMAT 1: 620 Q46 V29
Send PM
GMAT ToolKit User
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   27 Feb 2017, 12:53
Must be E
Assume that it is an analogy type of argument, so our goal is to find any evidence or assumption that would point out on any other reason due to rats have died during the experiment.
Ans "A" is tempting however we don't know if rats were fed with lower dosages of painkiller the upshot would be different or not, believe that it's the main drawback of this option.
avatar
B
Calvados89
Intern
Intern
Joined: 24 Nov 2015
Posts: 1
Own Kudos [?]: [0]
Given Kudos: 165
Schools: HBS '16
Send PM
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   07 Mar 2017, 09:36
It is E.

Firstly, I have chosen A, but on the second try it is clearly E. "not unusual = usual"
User avatar
G
goforgmat
Senior Manager
Senior Manager
Joined: 09 Feb 2015
Posts: 261
Own Kudos [?]: 88 [0]
Given Kudos: 233
Location: India
Concentration: Social Entrepreneurship, General Management
Schools: Booth '21 (D) Cambridge "21 (D) LBS '22 (D)
GMAT 1: 690 Q49 V34
GMAT 2: 720 Q49 V39
GPA: 2.8
Send PM
Reviews Badge
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   08 Mar 2017, 06:24
SajjadAhmad wrote:
Source: McGraw Hills GMAT

A pharmaceutical company tested a new painkiller on 1,000 lab rats that were fed large doses of the painkiller for a two-month period. By the end of the experiment, 39 of the rats had died. The company concluded that the painkiller was sufficiently safe to test on humans.

Which of the following, if true, provides the most support for the pharmaceutical company’s conclusion?

A. The amount of painkiller fed to the rats was substantially greater, in relation to body mass, than the dosage any human would take under normal circumstances.
B. Because of the different body chemistry of humans and rats, some compounds can be dangerous for rats but safe for humans, and vice versa.
C. Tests of this same painkiller on dogs showed that 3 out of 50 dogs developed lesions on their livers during the course of the experiment.
D. The researchers found that during the experiment, the rats showed a significantly lower sensitivity to pain than rats do under normal circumstances.
E. In an experiment of this length with this number of rats, it is not unusual for up to 50 rats to die during the experiment for reasons unrelated to the experiment itself.


Conclusion : very clearly
The company concluded that the painkiller was sufficiently safe to test on humans.

Premise : out of 1000 ,only 39 died.

in order for the conclusion to be true we must assume that 39 died due to reasons unrelated to the drug itself.
Only option E states that.
User avatar
D
abhishekdadarwal2009
Director
Director
Joined: 04 Sep 2015
Posts: 552
Own Kudos [?]: 436 [1]
Given Kudos: 123
Location: India
WE:Information Technology (Computer Software)
Send PM
Reviews Badge
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   08 Mar 2017, 15:24
1
Kudos
A pharmaceutical company tested a new painkiller on 1,000 lab rats that were fed large doses of the painkiller for a two-month period. By the end of the experiment, 39 of the rats had died. The company concluded that the painkiller was sufficiently safe to test on humans.

Which of the following, if true, provides the most support for the pharmaceutical company’s conclusion?

A. The amount of painkiller fed to the rats was substantially greater, in relation to body mass, than the dosage any human would take under normal circumstances.
B. Because of the different body chemistry of humans and rats, some compounds can be dangerous for rats but safe for humans, and vice versa.
C. Tests of this same painkiller on dogs showed that 3 out of 50 dogs developed lesions on their livers during the course of the experiment.
D. The researchers found that during the experiment, the rats showed a significantly lower sensitivity to pain than rats do under normal circumstances.
E. In an experiment of this length with this number of rats, it is not unusual for up to 50 rats to die during the experiment for reasons unrelated to the experiment itself.

PreThinking:For strengthen question we need to strengthen the link between the premise and the Conclusion, since the premise is that 39 rats died but even then the painkiller is safe for human testing.why is it safe one would think..it may be that the number of rats die during the tests is larger than in current scenario and the death rate is lower than usual.Or humans would be tested with significantly lower doses than rats.

Option E iterates the prethinking and is the correct answer.No need of POE.

User avatar
G
anje29
Manager
Manager
Joined: 24 Oct 2012
Status:Active
Affiliations: NA
Posts: 190
Own Kudos [?]: 114 [0]
Given Kudos: 59
GMAT 1: 590 Q50 V21
GMAT 2: 600 Q48 V25
GMAT 3: 730 Q51 V37
GPA: 3.5
Send PM
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   07 Apr 2017, 06:42
A is wrong because we have better option E , which clearly joins premise and conclusion. Option E mentions another factors to be the cause of death that is usual in such experiments whereas Option A talks about dosage amount , which doesn't justify the death of only 39 rats.
User avatar
L
Sajjad1994
GRE Forum Moderator
Joined: 02 Nov 2016
Posts: 13961
Own Kudos [?]: 32938 [0]
Given Kudos: 5778
GPA: 3.62
Send PM
CAT Tests Forum Quiz Mode
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink] New post   19 Apr 2021, 07:43
Expert Reply
Official Explanation

If it is normal for up to 50 rats to die, then the death of 39 rats does not in itself suggest that the new drug is inherently unsafe. Answers A and B help explain why the rats died, but they do not give strong evidence that whatever killed the rats would not be equally dangerous for humans.

ANSWER: E
GMAT Club Bot
gmatclubot
Re: A pharmaceutical company tested a new painkiller on 1,000 lab rats tha [#permalink]
19 Apr 2021, 07:43
Moderators:
GMATNinja
GMAT Club Verbal Expert
6921 posts
GMATNinjaTwo
GMAT Club Verbal Expert
238 posts
mysterymanrog
CR Forum Moderator
832 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions