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Last year, 1,200 Smithtown residents who work in hospitals

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Last year, 1,200 Smithtown residents who work in hospitals [#permalink] New post 28 Feb 2007, 09:18
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Last year, 1,200 Smithtown residents who work in hospitals and doctors’ offices contracted the flu, and 1,100 Smithtown residents who are not employed in medical facilities contracted the flu. On the basis of these numbers, it is safe to conclude that the likelihood of contracting the flu was not much different for those who were employed in medical facilities than it was for those who were not.

Which of the following would reveal most clearly the irrationality of the conclusion above?

A) Counting cases of the flu among home health care workers as well as cases among workers at medical facilities
B) Expressing the difference between the numbers of flu cases among medical facility workers and others as a percentage of the total number of flu cases
C) Counting flu cases contracted by medical facility workers while at work separately from those contracted by medical facility workers while not at work
D) Comparing flu cases per hundred members of each group, rather than comparing total numbers of flu cases in each group
E) Comparing flu cases contracted in medical facilities by people who do not work in those facilities to flu cases contracted in medical facilities by people who do work in them
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Re: CR - Flu [#permalink] New post 28 Feb 2007, 10:23
[quote="rdg"]Last year, 1,200 Smithtown residents who work in hospitals and doctors’ offices contracted the flu, and 1,100 Smithtown residents who are not employed in medical facilities contracted the flu. On the basis of these numbers, it is safe to conclude that the likelihood of contracting the flu was not much different for those who were employed in medical facilities than it was for those who were not.

Which of the following would reveal most clearly the irrationality of the conclusion above?

A) Counting cases of the flu among home health care workers as well as cases among workers at medical facilities
B) Expressing the difference between the numbers of flu cases among medical facility workers and others as a percentage of the total number of flu cases
C) Counting flu cases contracted by medical facility workers while at work separately from those contracted by medical facility workers while not at work
D) Comparing flu cases per hundred members of each group, rather than comparing total numbers of flu cases in each group
E) Comparing flu cases contracted in medical facilities by people who do not work in those facilities to flu cases contracted in medical facilities by people who do work in them[/quote]


C.

Argument doesnt take in account that workers at medical facilities may have contacted flu from people who came for checkups/medicines
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 [#permalink] New post 28 Feb 2007, 10:33
Why not D? D could prove that percentage of sick hospital workers is higher than percentage of sick people outside the hospital. Therefore the likelihood of contracting the flu was different (higher) for those who were employed in medical facilities than it was for those who were not.
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 [#permalink] New post 28 Feb 2007, 10:40
[quote="nervousgmat"]Why not D? D could prove that percentage of sick hospital workers is higher than percentage of sick people outside the hospital. Therefore the likelihood of contracting the flu was different (higher) for those who were employed in medical facilities than it was for those who were not.[/quote]

Agree. D is better
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 [#permalink] New post 28 Feb 2007, 14:42
D

since hospital workers are a much smaller group, if they have the same number of cases as the reg population, the percentage in the hospital is a lot more

disproving that it's just as easy to contract in hospital, as it is outside
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 [#permalink] New post 28 Feb 2007, 21:16
OA is (D)
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Re: CR - Flu [#permalink] New post 28 Feb 2007, 21:26
shrish123 wrote:
rdg wrote:
Last year, 1,200 Smithtown residents who work in hospitals and doctors’ offices contracted the flu, and 1,100 Smithtown residents who are not employed in medical facilities contracted the flu. On the basis of these numbers, it is safe to conclude that the likelihood of contracting the flu was not much different for those who were employed in medical facilities than it was for those who were not.

Which of the following would reveal most clearly the irrationality of the conclusion above?

A) Counting cases of the flu among home health care workers as well as cases among workers at medical facilities
B) Expressing the difference between the numbers of flu cases among medical facility workers and others as a percentage of the total number of flu cases
C) Counting flu cases contracted by medical facility workers while at work separately from those contracted by medical facility workers while not at work
D) Comparing flu cases per hundred members of each group, rather than comparing total numbers of flu cases in each group
E) Comparing flu cases contracted in medical facilities by people who do not work in those facilities to flu cases contracted in medical facilities by people who do work in them



C.

Argument doesnt take in account that workers at medical facilities may have contacted flu from people who came for checkups/medicines


I understand that you are trying to be sure that medical staff who contacted flu represent the medical staff. But that thing is taken for granted in the argument I guess.

The conclusion is focusing on staff and non staff. Hence, D seems to be the answer.
Re: CR - Flu   [#permalink] 28 Feb 2007, 21:26
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Last year, 1,200 Smithtown residents who work in hospitals

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