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The public service advertising campaign promoting the use of helmets

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The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 06 Jan 2016, 14:24
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63% (02:10) correct 37% (02:16) wrong based on 326 sessions

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The public service advertising campaign promoting the use of helmets has improved bicycle safety dramatically. Over the past 12 months, the number of serious bicycling injuries has been reduced by nearly 70 percent. Unfortunately, helmet usage has not reduced the number of all types of bike injuries. While serious head trauma has decreased by nearly 85 percent, broken bones now represent 20 percent of all reported bicycling injuries. This is a significant increase from last year’s 14 percent.

The reasoning in the argument is flawed because the argument does which of the following?


A. It fails to include information about any types of bicycle injuries other than head trauma and broken bones.

B. It implies that the same conclusion can result from two different sets of causes.

C. It fails to take into account any possible increase in the number of people riding bicycles over the past 12 months.

D. It presumes that an increase in the percentage of injuries involving broken bones precludes a decrease in the actual number of such injuries.

E. It ignores the fact that a 70 percent overall decrease in injuries would not allow for an 85 percent decrease in one specific type of injury.
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Re: The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 06 Jan 2016, 22:25
D it is: It presumes that an increase in the percentage of injuries involving broken bones precludes a decrease in the actual number of such injuries.---->A TYPICAL confusion of PERCENTAGES and ACTUAL NUMBERS
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Re: The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 07 Jan 2016, 11:32
saiesta wrote:
The public service advertising campaign promoting the use of helmets has improved bicycle safety dramatically. Over the past 12 months, the number of serious bicycling injuries has been reduced by nearly 70 percent. Unfortunately, helmet usage has not reduced the number of all types of bike injuries. While serious head trauma has decreased by nearly 85 percent, broken bones now represent 20 percent of all reported bicycling injuries. This is a significant increase from last year’s 14 percent.


The reasoning in the argument is flawed because the argument does which of the following?

A. It fails to include information about any types of bicycle injuries other than head trauma and broken bones. - Out of scope
B. It implies that the same conclusion can result from two different sets of causes . - Out of scope
C. It fails to take into account any possible increase in the number of people riding bicycles over the past 12 months. - Out of scope
D. It presumes that an increase in the percentage of injuries involving broken bones precludes a decrease in the actual number of such injuries.
The stimulus starts with -
Quote:
The public service advertising campaign promoting the use of helmets has improved bicycle safety dramatically.
and
The concluding lines of the stimulus states -
Quote:
serious head trauma has decreased by nearly 85 percent, broken bones now represent 20 percent of all reported bicycling injuries. This is a significant increase from last year’s 14 percent.


There is an increase in % broken bone injuries from 14% to 20% this year, yet there is a dramatic improvement in bicycle safety.

E. It ignores the fact that a 70 percent overall decrease in injuries would not allow for an 85 percent decrease in one specific type of injury. - Out of scope
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Re: The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 19 Jan 2016, 04:59
Abhishek009 wrote:
saiesta wrote:
The public service advertising campaign promoting the use of helmets has improved bicycle safety dramatically. Over the past 12 months, the number of serious bicycling injuries has been reduced by nearly 70 percent. Unfortunately, helmet usage has not reduced the number of all types of bike injuries. While serious head trauma has decreased by nearly 85 percent, broken bones now represent 20 percent of all reported bicycling injuries. This is a significant increase from last year’s 14 percent.


The reasoning in the argument is flawed because the argument does which of the following?

A. It fails to include information about any types of bicycle injuries other than head trauma and broken bones. - Out of scope
B. It implies that the same conclusion can result from two different sets of causes . - Out of scope
C. It fails to take into account any possible increase in the number of people riding bicycles over the past 12 months. - Out of scope
D. It presumes that an increase in the percentage of injuries involving broken bones precludes a decrease in the actual number of such injuries.
The stimulus starts with -
Quote:
The public service advertising campaign promoting the use of helmets has improved bicycle safety dramatically.
and
The concluding lines of the stimulus states -
Quote:
serious head trauma has decreased by nearly 85 percent, broken bones now represent 20 percent of all reported bicycling injuries. This is a significant increase from last year’s 14 percent.


There is an increase in % broken bone injuries from 14% to 20% this year, yet there is a dramatic improvement in bicycle safety.

E. It ignores the fact that a 70 percent overall decrease in injuries would not allow for an 85 percent decrease in one specific type of injury. - Out of scope


Not clear to me at all. please tell me why option C is incorrect?
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Re: The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 24 Jan 2016, 00:29
"C" has a statistical flaw. Neither does percentage translate to number nor does number translate to percentage.
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Re: The public service advertising campaign promoting the use of helmets  [#permalink]

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New post 31 Aug 2018, 03:50
Can you please explain why D is right and other options are wrong
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Re: The public service advertising campaign promoting the use of helmets   [#permalink] 31 Aug 2018, 03:50
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