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When people show signs of having a heart attack an electrocardiograph

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When people show signs of having a heart attack an electrocardiograph  [#permalink]

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New post 22 Aug 2018, 11:26
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Question Stats:

48% (01:55) correct 52% (02:06) wrong based on 93 sessions

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When people show signs of having a heart attack an electrocardiograph (EKG) is often used to diagnose their condition. In a study, a computer program for EKG diagnosis of heart attacks was pitted against a very experienced, highly skilled cardiologist. The program correctly diagnosed a significantly higher proportion of the cases that were later confirmed to be heart attacks than did the cardiologist. Interpreting EKG data, therefore, should be left to computer programs.

Which one of the following, if true, most weakens the argument?

(A) Experts agreed that the cardiologist made few obvious mistakes in reading and interpreting the EKG data.
(B) The practice of medicine is as much an art as a science, and computer programs are not easily adapted to making subjective judgments.
(C) The cardiologist correctly diagnosed a significantly higher proportion of the cases in which no heart attack occurred than did the computer program.
(D) In a considerable percentage of cases, EKG data alone are insufficient to enable either computer programs or cardiologists to make accurate diagnoses.
(E) The cardiologist in the study was unrepresentative of cardiologists in general with respect to skill and experience.

Source: LSAT

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Re: When people show signs of having a heart attack an electrocardiograph  [#permalink]

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New post 22 Aug 2018, 15:54
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When people show signs of having a heart attack an electrocardiograph (EKG) is often used to diagnose their condition. In a study, a computer program for EKG diagnosis of heart attacks was pitted against a very experienced, highly skilled cardiologist. The program correctly diagnosed a significantly higher proportion of the cases that were later confirmed to be heart attacks than did the cardiologist. Interpreting EKG data, therefore, should be left to computer programs.

Which one of the following, if true, most weakens the argument?

(A) Experts agreed that the cardiologist made few obvious mistakes in reading and interpreting the EKG data. The ''obviousness'' of the mistakes is not properly defined.
(B) The practice of medicine is as much an art as a science, and computer programs are not easily adapted to making subjective judgments. No evidence is provided to support that subjective judgement played any part in the diagnostics.
(C) The cardiologist correctly diagnosed a significantly higher proportion of the cases in which no heart attack occurred than did the computer program. This is correct as it provides evidence of cardiologists being better than the computer program in another aspect of the diagnostics.
(D) In a considerable percentage of cases, EKG data alone are insufficient to enable either computer programs or cardiologists to make accurate diagnoses. Sufficiency of EKG data isn't in the scope of conclusion.
(E) The cardiologist in the study was unrepresentative of cardiologists in general with respect to skill and experience. The word highly skilled already makes the cardiologists unrepresentative. This actually strengthens the conclusion.

Anc: C
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Re: When people show signs of having a heart attack an electrocardiograph &nbs [#permalink] 22 Aug 2018, 15:54
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