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The kinds of hand and wrist injuries that result from extended

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The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643
[Reveal] Spoiler: OA

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 07 Jun 2017, 21:17
ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643


C is the answer ...here teachers are monitoring student in classroom only ...what if student uses computer more outside class.

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 12 Jun 2017, 11:57
Why is E incorrect? Could anyone please explain to me? Would greatly appreciate it!

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 12 Jun 2017, 12:20
ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643


Current Status - Incorrect posture causes injuries to wrist and hand. Comps important, so teachers will monitor posture in class.
What would be best to know, to see if the plan would be successful?

A - Other injuries are irrelevant to this argument.
B - Injuries not caused by computer are irrelevant to the argument.
C - The only option that makes sense, as if many students use computers outside of the classroom, the likelihood of the plan succeeding are altered.
D - Negated by the argument itself so irrelevant
E - Good to know students use good posture, but won't help see the likelihood of the plan succeeding.

Hence, C is the answer. Anyone else has any other insights?
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ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643



PARA talks of hand and wrist injuries and two options that school has for reducing these.
But the plan is to monitor the posture in class.

Let's see the choices and find the choices to find the answer that would be helpful in ascertaining the efficacy of the plan..


(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries
we are talking specifically of hand and wrist injuries. So OUT of scope

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville
we are talking of these injuries specific to computer usage. So OUT of scope

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
Yes. This tells us even if teaches monitor the posture in class but the students use computer extensively in homes, the desired result may not be reached

(D) Whether changes in the curriculum could reduce the schools' dependence on computers
This option has already been left out by school authorities. So OUT of scope again

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
csaluja, Again we are talking of students NOT using posture properly and effect of monitoring their posture in computer classes. So OUT of scope

C
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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 13 Jun 2017, 05:55
chetan2u wrote:
ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643



PARA talks of hand and wrist injuries and two options that school has for reducing these.
But the plan is to monitor the posture in class.

Let's see the choices and find the choices to find the answer that would be helpful in ascertaining the efficacy of the plan..


(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries
we are talking specifically of hand and wrist injuries. So OUT of scope

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville
we are talking of these injuries specific to computer usage. So OUT of scope

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
Yes. This tells us even if teaches monitor the posture in class but the students use computer extensively in homes, the desired result may not be reached

(D) Whether changes in the curriculum could reduce the schools' dependence on computers
This option has already been left out by school authorities. So OUT of scope again

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
csaluja, Again we are talking of students NOT using posture properly and effect of monitoring their posture in computer classes. So OUT of scope

C



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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 29 Jun 2017, 19:04
initially i marked E
gave a second attempt to find out C it was

a,b,d- clear out of scope.

e- we want plan to succeed, so even if some students use correct posture, some students will not use.

c- if plan is to correct the posture in classroom, we need to know how many of students use computers outside the classroom, bcoz any attempt to correct the posture tin class will be demolished if outside the class improper posture is followed.
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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 29 Jun 2017, 20:29
Imo C
If students use computers outside school in incorrect posture ,then the teachers can not monitor the posture of the students who use computers outside school.Thus will have hand and wrist injuries.
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New post 30 Jun 2017, 23:49
csaluja wrote:
Why is E incorrect? Could anyone please explain to me? Would greatly appreciate it!


E is wrong, because the question does not talk about the Number / Percentage of students who get hand / wrist injuries by computer usage, but talks about injuries caused in general.
But the teachers' idea of reducing the injuries by monitoring in classroom might fail, it the students spend substantial time out of classroom using the computer. In that time outside of school, they may be prone to injuries because of wrong posture.

Hope this helps !
Thanks.

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New post 08 Jul 2017, 03:09
Hi VeritasPrepKarishma

I went through the explanations but am unclear about terminology -
out of scope.

Let me present my understanding of argument to know my shortfalls:

Teacher's plan: To monitor student's posture, when they are present in classrooom, (see argument end in particular)
to bring sharp reduction in number of injuries caused by incorrect posture.

Goal: knowing what data, will this plan be successful?

A and B -> do not talk about relevant injuries are out.
C -> In argument we are only concerned with students who use computers in school classroom. The inherent assumption is that why would teachers bother to look for students posture after school hours?
D -> Should be correct OA since if ans is YES, then students will be less injured and vice versa.
E-> We are not concerned with proportion of students, we are concerned with monitoring posture and injuries caused.
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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 02 Aug 2017, 12:06
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

can you please explain in detail why is the answer c and not e

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 06 Aug 2017, 00:26
chetan2u wrote:
ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643



PARA talks of hand and wrist injuries and two options that school has for reducing these.
But the plan is to monitor the posture in class.

Let's see the choices and find the choices to find the answer that would be helpful in ascertaining the efficacy of the plan..


(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries
we are talking specifically of hand and wrist injuries. So OUT of scope

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville
we are talking of these injuries specific to computer usage. So OUT of scope

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
Yes. This tells us even if teaches monitor the posture in class but the students use computer extensively in homes, the desired result may not be reached

(D) Whether changes in the curriculum could reduce the schools' dependence on computers
This option has already been left out by school authorities. So OUT of scope again

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
csaluja, Again we are talking of students NOT using posture properly and effect of monitoring their posture in computer classes. So OUT of scope

Chetan,

I am not quite happy with this question. Let us only talk about BCE.


B:Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville:If this were true, then the plan will not be sucessful no matter how much teachers monitor, and if this were not true, then plan will be successful-let us keep this
C: What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom-Now, this option talks about only children who have the injury. What about those who dont have but can get,what if their proportion in more in the class?I am not sure how this can be the answer
E:What proportion of schoolchildren in Harnville already use correct posture while using a computer: If the proportion is huge, then there wont be a sharp reduction. But if the proportion is not huge, then the plan will be successful. Let us keep this.

Both C and E can be the answer IMO-would like to know your thoughts on this.
Also, if GMATNinja can explain this please.

Thanks

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 24 Aug 2017, 14:22
KS15 wrote:
Both C and E can be the answer IMO-would like to know your thoughts on this.
Also, if GMATNinja can explain this please.

Quote:
(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

We are told that "The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville." The teachers want to reduce those injuries by monitoring the students' posture. So we know that at least SOME of the students have bad posture, since they are suffering from injuries that specifically result from incorrect posture.

If that's the case, monitoring the students' posture should help reduce those injuries, regardless of what proportion of the students actually have bad posture. Knowing the proportion of students who already use correct posture would not help us assess the likelihood that the teachers' plan will be successful.
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New post 28 Aug 2017, 15:21
I did not select C because the answer focuses on schoolchildren with hand and wrist injuries as opposed to all children. The argument focuses on reducing the number of injuries therefore, the correct answer should not be limited to one group (injured) of children.

The teachers plan to bring reduction in the number of these injuries- how can you reduce the number of injuries if one is already injured (would be different if the topic was on severity)?

Please let me know what I am missing

ganand wrote:
The kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville. Computers are important to the school curriculum there, so instead of reducing the amount their students use computers, teachers plan to bring about a sharp reduction in the number of these injuries by carefully monitoring their students' posture when using computers in the classroom.

Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

The Official Guide for GMAT Review 2018

Practice Question
Question No.: CR643

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 28 Aug 2017, 21:44
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The answer is C
The argument talks about the use of computers in school and monitoring children who use the computers .
But if children use computers more outside their school then the plan of the school to monitor the posture while using computer is not going to be effective .
Hence we got our answer by negating C


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adkikani wrote:
Hi VeritasPrepKarishma

I went through the explanations but am unclear about terminology -
out of scope.

Let me present my understanding of argument to know my shortfalls:

Teacher's plan: To monitor student's posture, when they are present in classrooom, (see argument end in particular)
to bring sharp reduction in number of injuries caused by incorrect posture.

Goal: knowing what data, will this plan be successful?

A and B -> do not talk about relevant injuries are out.
C -> In argument we are only concerned with students who use computers in school classroom. The inherent assumption is that why would teachers bother to look for students posture after school hours?
D -> Should be correct OA since if ans is YES, then students will be less injured and vice versa.
E-> We are not concerned with proportion of students, we are concerned with monitoring posture and injuries caused.



Premises:

- Hand and wrist injuries caused by computer use are common among kids who have incorrect posture on computer for long.
- Long hours on computer cannot be helped

Plan - Check the posture to reduce these hand and wrist injuries

So the argument is about 3 things - "Hand and wrist injuries caused by computer use", "long hours on computer" and "incorrect posture"

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries

Other injuries is out of scope. It doesn't matter to our argument which discusses only computer hand and wrist injuries.

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville.

Again, other injuries are out of scope. It doesn't matter to our argument which discusses only computer hand and wrist injuries.

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom

This is important. You can correct their posture in school but if they use computers extensively at home too, the injuries may not reduce. If they don't use computers at home, injuries may reduce.

(D) Whether changes in the curriculum could reduce the schools' dependence on computers

This is out of scope too. Our argument had already established that long hours cannot be helped. A relook at that is not within the scope of our argument.

(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.

This doesn't help us. The argument talks about the kids who have incorrect posture - whatever proportion that might be.

Answer (C)
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The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 14 Sep 2017, 22:18
incorrect posture + long computer use ---> HWI
computer are important so cant reduce time
but posture can be correct by teachers

Weakener :-
Prethinking:-
what if teachers themselves have no idea what is correct posture?
Sharp reduction :- what if posture is a problem but only 10% issue, what if it is more bcoz of use of computer and less because of posture.


Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries : Out of scope

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville :- OUT of scope

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
Lets say 10% schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom then teachers help them much.
Lets say 90% schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom then teachers can't help them much.



(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
Lets say 10% proportion of schoolchildren in Harnville already use correct posture while using a computer. Then yes, sharp reduction can happen.
but say 90% proportion of schoolchildren in Harnville already use correct posture while using a computer, then sharp reduction won't be possible because problem is more because of extensive use of computer than because of posture


why not E?

I THINK SHARP REDUCTION IS WHAT TUMBLING ME HERE.

BOTH C & E seems correct to me. Any explaination

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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mrdlee23 wrote:
I did not select C because the answer focuses on schoolchildren with hand and wrist injuries as opposed to all children. The argument focuses on reducing the number of injuries therefore, the correct answer should not be limited to one group (injured) of children.

The teachers plan to bring reduction in the number of these injuries- how can you reduce the number of injuries if one is already injured (would be different if the topic was on severity)?

Please let me know what I am missing

Thank you arvind910619 and VeritasPrepKarishma!

Yes, choice (C) focuses on schoolchildren with hand and wrist injuries, and the argument focuses on reducing the number of injuries. But if we are trying to reduce the number of THOSE injuries, we would want information about the students with THOSE injuries. For example, if most of the students with injuries use computers extensively while outside the classroom, then monitoring them only while they are IN the classroom will not be effective.

abrakadabra21 wrote:
(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
Lets say 10% proportion of schoolchildren in Harnville already use correct posture while using a computer. Then yes, sharp reduction can happen.
but say 90% proportion of schoolchildren in Harnville already use correct posture while using a computer, then sharp reduction won't be possible because problem is more because of extensive use of computer than because of posture

why not E?

I THINK SHARP REDUCTION IS WHAT TUMBLING ME HERE.

BOTH C & E seems correct to me. Any explanation

The passage tells us that "the kinds of hand and wrist injuries that result from extended use of a computer while maintaining an incorrect posture are common among schoolchildren in Harnville". I highlighted two very important aspects of that sentence:

  • We are only interested in injuries that result from maintaining an incorrect posture during extended use of a computer.
  • Such injuries are COMMON among schoolchildren in Harnville.

So, regardless of the proportion who already use correct posture, we KNOW that such injuries resulting from incorrect posture are COMMON among Harnville's schoolchildren. For example, even if MOST students use correct posture, the passage tells us that hand and wrist injuries that result from maintaining an incorrect posture during extended use of a computer are common. If we can reduce or eliminate those common injuries, then we would certainly have a sharp reduction.

I hope that helps!
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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 21 Sep 2017, 00:14
abrakadabra21 wrote:
incorrect posture + long computer use ---> HWI
computer are important so cant reduce time
but posture can be correct by teachers

Weakener :-
Prethinking:-
what if teachers themselves have no idea what is correct posture?
Sharp reduction :- what if posture is a problem but only 10% issue, what if it is more bcoz of use of computer and less because of posture.


Which of the following would it be most useful to know in order to assess the likelihood that the teachers' plan will be successful?

(A) Whether extended use of a computer while maintaining incorrect posture can cause injuries other than hand and wrist injuries : Out of scope

(B) Whether hand and wrist injuries not caused by computer use are common among schoolchildren in Harnville :- OUT of scope

(C) What proportion of schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom
Lets say 10% schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom then teachers help them much.
Lets say 90% schoolchildren in Harnville with hand and wrist injuries use computers extensively outside the classroom then teachers can't help them much.



(E) What proportion of schoolchildren in Harnville already use correct posture while using a computer.
Lets say 10% proportion of schoolchildren in Harnville already use correct posture while using a computer. Then yes, sharp reduction can happen.
but say 90% proportion of schoolchildren in Harnville already use correct posture while using a computer, then sharp reduction won't be possible because problem is more because of extensive use of computer than because of posture


why not E?

I THINK SHARP REDUCTION IS WHAT TUMBLING ME HERE.

BOTH C & E seems correct to me. Any explaination


Here is the point - you are aiming for a sharp reduction in number of such cases. If the number reduces from 100 to 30, it is a sharp reduction. It is also a sharp reduction if the number reduces from 10 to 3. So actual proportion of such cases is immaterial, whether 100 or 10.

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Re: The kinds of hand and wrist injuries that result from extended [#permalink]

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New post 12 Nov 2017, 22:37
this question is from OG, so test takers must learn the question carefully.
Using POE technique is quite time-consuming.
B and D are certainly out of scope.
A is quite annoying but A mainly concerns with the injuries -> A is out.

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Re: The kinds of hand and wrist injuries that result from extended   [#permalink] 12 Nov 2017, 22:37
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