PRINCTON REVIEW TEST

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PRINCTON REVIEW TEST

by RAGS » Thu May 10, 2007 9:43 am
The proportion of females among high school soccer players has dramatically increased over the past 15 years. This is seen in surveys completed by graduating seniors. In 1985, less than 10% of senior girls surveyed had played soccer in high school. In 2000, more than 25% of girls surveyed had participated in soccer. To evaluate the argument above, which of the following pieces of additional information would be most helpful?

A.The percentage of male high school soccer players for the class of 1985 and 2000.
B.The percentage of girls who played soccer after high school.
C.The percentage of girls that graduated from high school in 1985.
D.The percentage of girls that did not graduate but did play soccer in high school for the class of 2000.
E.The percentage of boys that graduated from high school in 1985 and 2000.

THE ANS IS A I CHOSE D HOW CAN A BE THE ANS


A company that manufactures heavy industrial equipment employs dozens of people in jobs that are considered quite hazardous. The company obeys federal regulations governing workplace safety, and, to comply with new regulations instituted to avoid recently discovered risks from airborne particulate matter, company engineers were required to install extremely expensive air filtering equipment. However, despite the expense of the air filtering equipment, the company's operating costs for the quarter were considerably lower than normal.Which of the following, if true, most helps to resolve the apparent paradox?

A.Over half the company's expenditures to maintain worker safety go to pay for protective garments; yet only a small percentage of such expenditures go to pay for nose and mouth filters.
B.Prior to the installation of the air filtering equipment, the company had had to prevent damage due to particulate contamination of manufacturing equipment.
C.The company's costs of labor, which make up a large fraction of operating costs, increased during the same period.
D.When the air filtering equipment was installed in the manufacturing facility, the company took the opportunity to upgrade the temperature control equipment.
E.The majority of the company's employees work in the areas of the plant in which the air filtering equipment was installed.

I CHOSE D ANS IS B WHY?????
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Re: PRINCTON REVIEW TEST

by jayhawk2001 » Thu May 10, 2007 9:05 pm
RAGS wrote:The proportion of females among high school soccer players has dramatically increased over the past 15 years. This is seen in surveys completed by graduating seniors. In 1985, less than 10% of senior girls surveyed had played soccer in high school. In 2000, more than 25% of girls surveyed had participated in soccer. To evaluate the argument above, which of the following pieces of additional information would be most helpful?

A.The percentage of male high school soccer players for the class of 1985 and 2000.
B.The percentage of girls who played soccer after high school.
C.The percentage of girls that graduated from high school in 1985.
D.The percentage of girls that did not graduate but did play soccer in high school for the class of 2000.
E.The percentage of boys that graduated from high school in 1985 and 2000.

THE ANS IS A I CHOSE D HOW CAN A BE THE ANS
The claim is proportion of females among high school soccer players has dramatically increased over the past 15 years. .

If we know the % of male soccer players for each of the years 1985 and
2000, we can hence compute the % of female soccer players and
validate the claim above.

Hence A


RAGS wrote: A company that manufactures heavy industrial equipment employs dozens of people in jobs that are considered quite hazardous. The company obeys federal regulations governing workplace safety, and, to comply with new regulations instituted to avoid recently discovered risks from airborne particulate matter, company engineers were required to install extremely expensive air filtering equipment. However, despite the expense of the air filtering equipment, the company's operating costs for the quarter were considerably lower than normal.Which of the following, if true, most helps to resolve the apparent paradox?

A.Over half the company's expenditures to maintain worker safety go to pay for protective garments; yet only a small percentage of such expenditures go to pay for nose and mouth filters.
B.Prior to the installation of the air filtering equipment, the company had had to prevent damage due to particulate contamination of manufacturing equipment.
C.The company's costs of labor, which make up a large fraction of operating costs, increased during the same period.
D.When the air filtering equipment was installed in the manufacturing facility, the company took the opportunity to upgrade the temperature control equipment.
E.The majority of the company's employees work in the areas of the plant in which the air filtering equipment was installed.

I CHOSE D ANS IS B WHY?????
In D, upgrading the temperature control equipment tells us nothing
about operating costs i.e. did it increase or decrease. So, it doesn't
help answer the question of decrease in operating costs.

B bridges the gap by telling us that there was cost involved in protecting
manufacturing equipment prior to the air filter installation. So,
by installing filters, it obviates the need for protection and hence
the costs.

This can explain why opex went down.

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by mankey » Fri Nov 25, 2011 10:57 am
Stuck with this one. Please help.

Thanks.

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by tpr-becky » Fri Nov 25, 2011 7:27 pm
he proportion of females among high school soccer players has dramatically increased over the past 15 years. This is seen in surveys completed by graduating seniors. In 1985, less than 10% of senior girls surveyed had played soccer in high school. In 2000, more than 25% of girls surveyed had participated in soccer. To evaluate the argument above, which of the following pieces of additional information would be most helpful?

A.The percentage of male high school soccer players for the class of 1985 and 2000.
B.The percentage of girls who played soccer after high school.
C.The percentage of girls that graduated from high school in 1985.
D.The percentage of girls that did not graduate but did play soccer in high school for the class of 2000.
E.The percentage of boys that graduated from high school in 1985 and 2000.

we need to evaluate that the information is true based on the survey, thus we need to clarify that the survey was representative. The only way to do this is to know that the increase in percent of girls who play soccer was actually a real increase - not just that there were fewer girls all together. for instance if there were 10 girls out of 100 played in '85 and if there were 10 girls out of 40 who played the the number of girls did not go up at all and if the number of boys who played soccer stayed the same (let's say 20 boys playing) then the proportion did not actually go up.

A) tells us the percent of male soccer players - this would help us to know the percent of female soccer players (as male/female is an either or category on the GMAT - you are either one or the other).

B) after high school is out of scope
c) graduated on in 85 will not give us a good indication of proportion
d) Did not graduate is not included in the survey and thus out of scope
e) boys graduated helps but we need the proportion of soccer players so A is better.
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by tuanquang269 » Fri Dec 16, 2011 2:13 am
IMO C.

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by [email protected] » Mon Feb 13, 2012 9:50 pm
Becky! what explanation you gave, is understood, but then what I feel is that the answer E is more appropriate... As we only need to know the number of males that graduated and the total number of females in both the years. I think we only need option E, we do not need the option A as it talks about the ratio of Number of Male Soccer players to number males and we only need the number of males. So option E is sufficed.....



Please help if I am wrong...........
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by pemdas » Mon Feb 13, 2012 10:11 pm
RAGS wrote:The proportion of females among high school soccer players has dramatically increased over the past 15 years. This is seen in surveys completed by graduating seniors. In 1985, less than 10% of senior girls surveyed had played soccer in high school. In 2000, more than 25% of girls surveyed had participated in soccer. To evaluate the argument above, which of the following pieces of additional information would be most helpful?

A.The percentage of male high school soccer players for the class of 1985 and 2000.
B.The percentage of girls who played soccer after high school.
C.The percentage of girls that graduated from high school in 1985.
D.The percentage of girls that did not graduate but did play soccer in high school for the class of 2000.
E.The percentage of boys that graduated from high school in 1985 and 2000.
We need to answer if the proportion of females has increased among the high school soccer players. For this we must know the exact number of high school players and ratio of male players to all high school players in different periods of time cited for the female players.Two periods are cited 1985 and 2000. None of the choices supply the complete data for us to evaluate the conclusion, except for choice A which supplies the limited info about the ratio of male players to all high school players in 1985 and 2000.

a
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by [email protected] » Mon Feb 13, 2012 11:33 pm
Thanks Pemdas! I got it where I was going wrong.....
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