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# A nutritionist studying the effects of massive doses of

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18 Mar 2010, 03:03
Hi,
I was lured by B that talk about preventing disease, not about case of flu, damn it.
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29 Apr 2010, 07:40
In D, it says - Massive doses of vitamin C can help to prevent serious case of flu. But, there are chances of still getting the flu.

So, I marked A.
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01 May 2010, 09:29
GMATBLACKBELT wrote:
A nutritionist studying the effects of massive doses of vitamin C found that of a group of 600 people who regularly took 1,500 mg of vitamin C daily for a year, fewer than 9 percent suffered serious cases of flu; of a group of 600 people who took 250 mg of vitamin C (the standard recommended daily allowance) daily for a year, 34 percent suffered at least one serious case of flu; and of a group of 600 people who took no vitamin C for a year (other than that found in the foods in a balanced diet), 32 percent suffered at least one serious case of flu.
Which of the following hypotheses is best supported by the evidence above?

A. The effectiveness of vitamin C in preventing serious cases of flu increases in direct proportion to the amount of vitamin C taken.

B. Vitamin C is helpful in preventing disease.

C. Doses of vitamin C that exceed the standard recommended daily allowance by 500 percent will reduce the incidence of serious cases of flu by 25 percent.

D. Massive doses of vitamin C can help to prevent serious case of flu.

E. A balanced diet contains less than 250 mg of vitamin C

??????? I was going over questions I did in Gmatter last night.

I will go with "D".

Origanlly last night the answer was C, now today it says the answer is D???

What gives?

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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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13 Jun 2010, 08:48
must be true ques

The evidence presented in the argument is not complete ,so we cannot infer anything something that is definitely going to happen ,because ,in that case,author will give another evidence that disproves your answer to counter the solution, the answer has to be something that is probable
(D) says vitamin C can help ,it doesn’t say it will help to prevent => correct

if you choose answer (C) ,to counter you answer author canl provide further evidence something like

Doses of vitamin C that exceed the standard recommended daily allowance by 600 percent will not reduce the incidence of serious cases of flu by 25 percent.

correct me if my explanation is wrong
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18 Jul 2010, 09:35
D: Wonder if we have OA
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19 Jul 2010, 20:55
I think it is D.
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19 Jul 2010, 21:13
I went for D, but I was also tempted by C.

After read the entire thread, I agree that the main problem with D would be define "massive".

A nutritionist studying the effects of massive doses of vitamin C found that...

So, from nutritionist's point of view, I think we can consider 1,500mg a massive dosage. Hence answer D is correct.

What do you guys think?
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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08 Sep 2010, 19:33
if all the groups were having balanced diets + vitamin C tablets when why is it wrong to assume that the balanced diet < 250mg? I assume the #s reported are the tablets+food. I dont get why E is wrong. Is it because it is not a hypothesis?
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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14 Sep 2010, 06:32
i think D
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17 Sep 2010, 23:50
vbarrozo wrote:
I went for D, but I was also tempted by C.

After read the entire thread, I agree that the main problem with D would be define "massive".

A nutritionist studying the effects of massive doses of vitamin C found that...

So, from nutritionist's point of view, I think we can consider 1,500mg a massive dosage. Hence answer D is correct.

What do you guys think?

IMO D...
OA is also D. Mentioned at.... urch dot com / forums / gmat-critical-reasoning / 98722-nutritionist-studying-effects.html
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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09 Nov 2010, 05:45
What is OA?

I vote for E.
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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29 Nov 2010, 16:54
I don't get how D can be the oa.
Massive doses of vit c is based on the 1500 case - fewer than 9 pc- but the premise does not specify how many serious cases were accounted for by these 9 pc. The 250 case and the no vit c other than balanced diet case mention atleast x serious cases. So let's say if these 2 cases only accounted for one serious case per ill person and the 9 pc case each ill person reports 2 mn serious cases where they fall I'll repeatedly - then though the number of 9 pc is less - the number of serious cases can be more and it could be that vit c massive dose has no effect. How does d satisfy the "must be true" test?

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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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29 Nov 2010, 19:39
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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29 Nov 2010, 20:42
IMO D..

"...by 500 percent will reduce the incidence of serious..."

I rejected C because "will" made it too strong to be a hypothesis...
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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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29 Nov 2010, 22:53
According to the websters dictionary "hypothesis" can mean one of 3 things. One of the listed meanings is: an assumption

When the GMAT uses the word "hypothesis" does it require the use of the "must be true" test associated with an assumption or even a conclusion or a simple can be true/likely standard used for strengthen/weaken questions?

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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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30 Nov 2010, 05:32
Expert's post
vaibhavtripathi wrote:
IMO D..

"...by 500 percent will reduce the incidence of serious..."

I rejected C because "will" made it too strong to be a hypothesis...

Though the choice of 'can' definitely makes more sense when putting forward a hypothesis, I still may not reject a choice solely on the basis of the use of 'will'. I can definitely formulate a conditional proposition such as:
If A happens, B will happen. - Here A is my hypothesis but the proposition is using 'will'.
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Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 6682 Location: Pune, India Followers: 1833 Kudos [?]: 11159 [0], given: 219 Re: nutritionist studying the effects of massive doses of vitami [#permalink] ### Show Tags 30 Nov 2010, 05:44 Expert's post gmat1011 wrote: According to the websters dictionary "hypothesis" can mean one of 3 things. One of the listed meanings is: an assumption When the GMAT uses the word "hypothesis" does it require the use of the "must be true" test associated with an assumption or even a conclusion or a simple can be true/likely standard used for strengthen/weaken questions? Posted from my mobile device Hypothesis means it is not an established fact. It is either used as 'working hypothesis' where it is a guess to guide further investigation or it is something highly probable in light of evidence provided. The second meaning is the way the word has been used here. When the dictionary says that a hypothesis could be a mere assumption too, it means something that is not established to be true. Something that is just being assumed for some purpose. When we use 'assumption' in our CR questions as in 'which of the following is an assumption in the argument?', we mean that the argument was given by assuming something. [highlight]That assumption was taken to be true to arrive at the conclusion.[/highlight] That is why we check for 'must be true' with respect to the conclusion. Conclusion is what you can infer without doubt. If the given premises are true, it must be true. You can see a question that says "Which of the following can be concluded from the argument above?" But you will not see "Which of the following hypothesis can be concluded from the argument above?" It will be "Which of the following hypothesis is [highlight]best supported[/highlight] by the argument above?" _________________ Karishma Veritas Prep | GMAT Instructor My Blog Get started with Veritas Prep GMAT On Demand for$199

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Re: nutritionist studying the effects of massive doses of vitami [#permalink]

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30 Nov 2010, 08:01
great - thanks for clarifying that VeritasPrepKarishma!
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03 Sep 2011, 09:04
D?

(A) The effectiveness of vitamin C in preventing serious cases of flu increases in direct proportion to the amount of vitamin C taken. - Incorrect assumption
(B) Vitamin C is helpful in preventing disease. - Language too vague
(C) Doses of vitamin C that exceed the standard recommended daily allowance by 500 percent will reduce the incidence of serious cases of flu by 25 percent. - Language too specific
(D) Massive doses of vitamin C can help to prevent serious case of flu. - Correct
(E) A balanced diet contains less than 250 mg of vitamin C. - Irrelevant
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Re: CR-Vitamin C And Flu [#permalink]

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04 Sep 2011, 16:23
bholakc wrote:
A nutritionist studying the effects of massive doses of vitamin C found that of a group of 600 people who regularly took 1,500 mg of vitamin C daily for a year, fewer than 9 percent suffered serious cases of flu; of a group of 600 people who took 250 mg of vitamin C (the standard recommended daily allowance) daily for a year, 34 percent suffered at least one serious case of flu; and of a group of 600 people who took no vitamin C for a year (other than that found in the foods in a balanced diet), 32 percent suffered at least one serious case of flu.

Which of the following hypotheses is best supported by the evidence above?

(A) The effectiveness of vitamin C in preventing serious cases of flu increases in direct proportion to the amount of vitamin C taken.
(B) Vitamin C is helpful in preventing disease.
(C) Doses of vitamin C that exceed the standard recommended daily allowance by 500 percent will reduce the incidence of serious cases of flu by 25 percent.
(D) Massive doses of vitamin C can help to prevent serious case of flu.
(E) A balanced diet contains less than 250 mg of vitamin C.
Re: CR-Vitamin C And Flu   [#permalink] 04 Sep 2011, 16:23

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