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A year after the start an experiment to decrease crime in two high-cri

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A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 31 Aug 2018, 03:09
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A year after the start an experiment to decrease crime in two high-crime subway stations by the installation of closed-circuit televisions, the experiment is being discontinued, city officials say the program has led to an increase in crime, citing the fact that following the installation, both stations showed increases in the number of crimes reported.

Which of the following, if true, most seriously weakens the claim of the city officials that the program has led to an increase in crime?


(A) The two subway stations had been chosen on the basis subway stations was higher than that of other high-crime subway stations not equipped with closed-circuit-television.

(B) The rate of increase in crimes reported for two subway stations was higher than that of other high-crime subway stations not equipped with closed-circuit television.

(C) The percentage of all crimes committed at the two subway stations that were reported rose as a result of increased instances of observations of crime on the closed-circuit televisions.

(D) The year in which the experiment was conducted was a year in which the total number of crimes reported in the city fell.

(E) Closed-circuit televisions installed in shops and stores throughout the city have proved to be useful in the prevention of shoplifting and burglaries.

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Re: A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 31 Aug 2018, 03:14
Conclusion - the program has led to an increase in crime.
Alternative cause to the effect will weaken the conclusion

increased instances of observations of crime --> led to an increase in crime. [C]
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Re: A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 31 Aug 2018, 11:32
[quote="Bunuel"]A year after the start an experiment to decrease crime in two high-crime subway stations by the installation of closed-circuit televisions, the experiment is being discontinued, city officials say the program has led to an increase in crime, citing the fact that following the installation, both stations showed increases in the number of crimes reported.

Which of the following, if true, most seriously weakens the claim of the city officials that the program has led to an increase in crime?


(A) The two subway stations had been chosen on the basis subway stations was higher than that of other high-crime subway stations not equipped with closed-circuit-television.
Does not impact our conclusion that there was an INCREASE in crime.Drop It.

(B) The rate of increase in crimes reported for two subway stations was higher than that of other high-crime subway stations not equipped with closed-circuit television.
This answer Choice does resonate with the thinking of City Officials that there was an increase in crime. Strengthens the claim. Drop it.

(C) The percentage of all crimes committed at the two subway stations that were reported rose as a result of increased instances of observations of crime on the closed-circuit televisions.
[b]Bingo. Shows that there was an increase in crime, but the reason being increased surveillance rather than the actual increase in the no. Keep it.[/b]

(D) The year in which the experiment was conducted was a year in which the total number of crimes reported in the city fell.
Irrelevant. Drop It.

(E) Closed-circuit televisions installed in shops and stores throughout the city have proved to be useful in the prevention of shoplifting and burglaries.
Irrelevant. Drop it.

Answer: C
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Re: A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 04 Sep 2018, 14:11
Please explain why c is the answer.
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Re: A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 04 Sep 2018, 22:35
Please refer to my post above!

siddharthfrancis wrote:
Please explain why c is the answer.

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Re: A year after the start an experiment to decrease crime in two high-cri  [#permalink]

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New post 09 Sep 2018, 05:59
i choose c because closed circuit television helped in reporting crimes which would gone unnoticed reporting of crime increased not no. of crimes. is this correct explanation?
Re: A year after the start an experiment to decrease crime in two high-cri &nbs [#permalink] 09 Sep 2018, 05:59
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