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Of 2,500 people who survived a first heart attack, those who

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Of 2,500 people who survived a first heart attack, those who [#permalink] New post 09 Mar 2004, 18:10
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A
B
C
D
E

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Of 2,500 people who survived a first heart attack, those who did not smoke had their first heart attack at a median age of 62. However, of those 2,500 people who smoked two packs of cigarettes a day had their first heart attack at a median age of 51. On the basis of this information, it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.

The conclusion is incorrectly drawn from the information given because this information does not include

(A) the relative seventy of heart attacks suffered by smokers and nonsmokers
(B) the nature of the different medical treatments that smokers and nonsmokers received after they had survived their first heart attack
(C) how many of the 2,500 people studied suffered a second heart attack
(D) the earliest age at which a person who smoked two packs a day had his or her first heart attack
(E) data on people who did not survive a first heart attack
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 [#permalink] New post 09 Mar 2004, 19:11
E for me
I think there is a typo in answer choice A, "seventy" would mean "severity"
A) we don't need to know the severity to disprove the conclusion
B) this is what happened after the fact and is not needed
C) again this is out of scope
D) this will not disprove the conclusion
E) Let's analyze the paragraph: Of 2,500 people who survived a first heart attack, those who did not smoke had their first heart attack at a median age of 62. However, of those 2,500 people who smoked two packs of cigarettes a day had their first heart attack at a median age of 51. On the basis of this information, it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.


Throughout the whole excerpt, the statistics is related to the 2500 who survived a first heart attack and then suddenly, towards the end, the conclusion shifts the scope to all non-smokers in general. In order to justify the conclusion, we would need to include the data on both smokers and non-smokers who did not survive a first heart attack

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 [#permalink] New post 09 Mar 2004, 19:59
I will choose D.

The stimulus talks about the median age but the conclusion just generalizes it.

(A) the relative seventy of heart attacks suffered by smokers and nonsmokers
Severity doesn't matter for the conclusion
(B) the nature of the different medical treatments that smokers and nonsmokers received after they had survived their first heart attack
This talks about after treatment
(C) how many of the 2,500 people studied suffered a second heart attack
No need to worry about second attack for the conclusion to be drawn.
(D) the correct one
(E) data on people who did not survive a first heart attack
Even this doesn't affect the conclusion.
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 [#permalink] New post 09 Mar 2004, 21:42
Quote:
8. Of 2,500 people who survived a first heart attack, those who did not smoke had their first heart attack at a median age of 62. However, of those 2,500 people who smoked two packs of cigarettes a day had their first heart attack at a median age of 51. On the basis of this information, it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.

The conclusion is incorrectly drawn from the information given because this information does not include

(A) the relative seventy of heart attacks suffered by smokers and nonsmokers
(B) the nature of the different medical treatments that smokers and nonsmokers received after they had survived their first heart attack
(C) how many of the 2,500 people studied suffered a second heart attack
(D) the earliest age at which a person who smoked two packs a day had his or her first heart attack
(E) data on people who did not survive a first heart attack


I will go for "E".

Explanation:
Conclusion of the stem is:
it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.
Now the question is:
The conclusion is incorrectly drawn from the information given because this information does not include ...
is nothing but asking for strengthening the argument in one way :
And "E" is the best choice which supplies data on people who did not survive a first heart attack.

Lets wait for official answer :)
Less than 2 mins

Dharmin
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 [#permalink] New post 09 Mar 2004, 21:54
Dharmin wrote:

Now the question is:
The conclusion is incorrectly drawn from the information given because this information does not include ...
is nothing but asking for strengthening the argument in one way :

Dharmin



Is not the question asking an assumption to weaken the conclusion?
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Re: [#2] CR Challenge : Heart Attack [#permalink] New post 09 Mar 2004, 22:25
praetorian123 wrote:
Rules

1. Time yourself
2. Solve this seperately, the fastest and best wins this challenge
3. Clearly explain your solution here. if you are right, others learn and if you are wrong, you will learn why.


8. Of 2,500 people who survived a first heart attack, those who did not smoke had their first heart attack at a median age of 62. However, of those 2,500 people who smoked two packs of cigarettes a day had their first heart attack at a median age of 51. On the basis of this information, it can be concluded that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day.

The conclusion is incorrectly drawn from the information given because this information does not include

(A) the relative seventy of heart attacks suffered by smokers and nonsmokers
(B) the nature of the different medical treatments that smokers and nonsmokers received after they had survived their first heart attack
(C) how many of the 2,500 people studied suffered a second heart attack
(D) the earliest age at which a person who smoked two packs a day had his or her first heart attack
(E) data on people who did not survive a first heart attack


Good discussion guys, the best answer is E. i quote here.

Remember, you must refute the conclusion, which says that nonsmokers tend to have a first heart attack eleven years later than do people who smoke two packs of cigarettes a day. This implies all nonsmokers.

Now look at the evidence. Both pieces deal with survivers of first heart attacks. Once sentence talks about non-smokers having their first heart attack at 62 and the other piece of evidences talks about smokers having their heart attacks at 51.

What's missing between the evidence and the conclusion? The conclusion deals with all people whether they survive or not, but the evidence deals with only those that survive.

Formulate your answer based on this. What if there were 1,000,000 non-smokers who had their first heart attack at age 15 and died? That doesn't violate any of the evidence, but it definitely casts doubt on the conclusion.
Re: [#2] CR Challenge : Heart Attack   [#permalink] 09 Mar 2004, 22:25
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