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# In response to mounting pubic concern, an airplane

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Manager
Joined: 16 Oct 2006
Posts: 159
In response to mounting pubic concern, an airplane [#permalink]

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17 Oct 2006, 21:47
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In response to mounting pubic concern, an airplane manufacturer implemented a program with the well-publicized goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division. When the program began in 1994, the divisionâ€™s hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker. Clearly, therefore, charges that the manufacturerâ€™s program has not met its goal are false.

Which of the following is an assumption on which the argument depends?

A. The amount of nonhazardous waste generated each year by the passenger-jet division has not increased significantly since 1994.

B. At least as many passenger jets were produced by the division last year as had been produced in 1994.

C. Since 1994, other divisions in the company have achieved reductions in hazardous waste output that are at least equal to that achieved in the passenger-jet division.

D. The average number of weekly hours per production worker in the passenger-jet division was not significantly greater last year than it was in 1994.

E. The number of production workers assigned to the passenger-jet division was not significantly less in 1994 than it was last year.
Senior Manager
Joined: 05 Jun 2005
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17 Oct 2006, 22:14
I thought it was E because it is mentioning that the waste was 90 pounds per worker and then went to 40 p per worker. So you want to make sure that the number of workers did not change.
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17 Oct 2006, 22:36
uvs_mba wrote:
I thought it was E because it is mentioning that the waste was 90 pounds per worker and then went to 40 p per worker. So you want to make sure that the number of workers did not change.

Yes should be a (E).
We do not know how much of an effect will a decrease in number of jets manufactured have on the wastes.
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VP
Joined: 21 Mar 2006
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17 Oct 2006, 22:47
A and C are out of scope.
D - no relation is mentioned between the no. of hours worked and the amount of hazardous waste. so OUT
B - hmm..very close. but there is a added assumption that more planes produce more hazardous waste. Although logically true, it is an assumption nonetheless.
E - Right. If the number of production workers in the passenger-jet division was less previously, the total amount of hazardous waste could have stayed the same while the hazardous waste/worker decreased.
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18 Oct 2006, 00:29
one more E.
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Director
Joined: 23 Jun 2005
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Re: SC - Public Concern [#permalink]

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18 Oct 2006, 04:58
KC wrote:
In response to mounting pubic concern, an airplane manufacturer implemented a program with the well-publicized goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division. When the program began in 1994, the divisionâ€™s hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker. Clearly, therefore, charges that the manufacturerâ€™s program has not met its goal are false.

D. The average number of weekly hours per production worker in the passenger-jet division was not significantly greater last year than it was in 1994.

E. The number of production workers assigned to the passenger-jet division was not significantly less in 1994 than it was last year.

Only D and E merit scrutiny.
Even if D is not assumed, i.e., even if a production worker's average weekly hours were greater last year, it doesn't affect the total hazardous waste output.

If E is not assumed, then there could have been 40 workers producing 3600 pounds in 1994, while last year there could have been 200 workers producing a total of 8000 pounds of waste output.

E for me.
Manager
Status: Post MBA, working in the area of Development Finance
Joined: 09 Oct 2006
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Re: SC - Public Concern [#permalink]

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18 Oct 2006, 05:21
KC wrote:
In response to mounting pubic concern, an airplane manufacturer implemented a program with the well-publicized goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division. When the program began in 1994, the division’s hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker. Clearly, therefore, charges that the manufacturer’s program has not met its goal are false.

Which of the following is an assumption on which the argument depends?

A. The amount of nonhazardous waste generated each year by the passenger-jet division has not increased significantly since 1994.

B. At least as many passenger jets were produced by the division last year as had been produced in 1994.

C. Since 1994, other divisions in the company have achieved reductions in hazardous waste output that are at least equal to that achieved in the passenger-jet division.

D. The average number of weekly hours per production worker in the passenger-jet division was not significantly greater last year than it was in 1994.

E. The number of production workers assigned to the passenger-jet division was not significantly less in 1994 than it was last year.

The Choice seems to be between B and E
If the same no. of planes are produced (Assumed that each plane produced tha same amt. of waste) and same no. of workers are there ( who remain as efficient) and per worker hazardous waste output decreases then the plan has been sucessful.
I will go with E. The answer seems to bein the "number of production workers being not significantly less in 1994" (double negative)
What is the OA?
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Joined: 29 Jan 2005
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18 Oct 2006, 06:47
EZO wrote:
D seems right because it uses the AVG.

The passage refers to "total yearly amount" of waste.

We must assume that the number of production workers did not change since 1994.

(E)
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15 Jan 2012, 10:04
EZO wrote:
D seems right because it uses the AVG.

My response to this question in another thread:
in-response-to-mounting-public-concern-an-airplane-102844.html#p1029503
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Re: Average   [#permalink] 15 Jan 2012, 10:04
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