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Why is the third diamond with wins close to 100 and payroll between 125-150 not considered? Why isn't the answer 3 out of 30
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Prakruti_Patil
Why is the third diamond with wins close to 100 and payroll between 125-150 not considered? Why isn't the answer 3 out of 30
The diamond you are mentioning is considered. See the screenshot below.



Read the OE here.
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Sajjad1994

Prakruti_Patil
Why is the third diamond with wins close to 100 and payroll between 125-150 not considered? Why isn't the answer 3 out of 30
The diamond you are mentioning is considered. See the screenshot below.



Read the OE here.
­I get your point but the third question dosent say that we only need to select the teams with highest wins or payroll.
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KushagraKirtiman

Sajjad1994

Prakruti_Patil
Why is the third diamond with wins close to 100 and payroll between 125-150 not considered? Why isn't the answer 3 out of 30
The diamond you are mentioning is considered. See the screenshot below.



Read the OE here.
­I get your point but the third question dosent say that we only need to select the teams with highest wins or payroll.
­Yes! The upper dot has the highest payroll (millions of $) while the second dot on the most right has the highest number of regular wins.
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­1. The likelihood that a team with a payroll greater than $125 million won more than 80 games was [less than] the likelihood that a team with a payroll less than $75 million won more than 70 games.

Number of teams with a payroll greater than $125 million won more than 80 games = 3 
Number of teams with a payroll less than $75 million won more than 70 games = a lot more than 3 



2. The probability that if a team is selected at random, it will be one of the top five teams in terms of both payroll and number of wins is [2/30].

Top 5 in terms of payroll
Top 5 in terms of wins

=> There are only 2 teams in top 5 in terms of both
Probability = 2/30 
­
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I did not get the meaning of top five team? If top 5 team is concerned then other may qualify too
Sajjad1994
Official Explanation

There were five teams that had payrolls greater than $125 million. Of those, three won more than 80 games. Thus, the likelihood that a team with a payroll greater than $125 million won more than 80 games was 0.6. Then there were 11 teams with a payroll less than $75 million, and of those, 7 won more than 70
games. Thus, the likelihood that a team with a payroll less than $75 million won more than 70 games was 0.64 (7 out of 11), which is greater than the likelihood that a team with a payroll greater than $125 million won more than 80 games.

­The correct answer is (C).

Only two of the 30 teams were in the top five in terms of both payroll and number of wins: the one represented by the top-most diamond, and the one represented by the diamond farthest to the right. Thus, the probability that, if a team is selected at random, it will be one of the top five teams in terms of both payroll and number of wins is 2 out of 30.

The correct answer is (A).
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manish8242
I did not get the meaning of top five team? If top 5 team is concerned then other may qualify too



“Top five teams” means the five teams ranked highest in each category.

  • “Top five in payroll” = five teams that had the largest payrolls (blue circles).
  • “Top five in wins” = five teams that had the most wins (red circles).

To answer the question, we look for the teams that appear in both groups, that is, the dots circled both blue and red.

From the graph, there are two such teams (circled twice), meaning 2 out of 30 teams were in the top five for both payroll and wins.

So, the probability that a randomly selected team was in both top-five groups is 2/30.
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Is this an Official GMAC question Sajjad1994 ?
Sajjad1994
Official Explanation

There were five teams that had payrolls greater than $125 million. Of those, three won more than 80 games. Thus, the likelihood that a team with a payroll greater than $125 million won more than 80 games was 0.6. Then there were 11 teams with a payroll less than $75 million, and of those, 7 won more than 70 games. Thus, the likelihood that a team with a payroll less than $75 million won more than 70 games was 0.64 (7 out of 11), which is greater than the likelihood that a team with a payroll greater than $125 million won more than 80 games.

­The correct answer is (C).

Only two of the 30 teams were in the top five in terms of both payroll and number of wins: the one represented by the top-most diamond, and the one represented by the diamond farthest to the right. Thus, the probability that, if a team is selected at random, it will be one of the top five teams in terms of both payroll and number of wins is 2 out of 30.

The correct answer is (A).
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nihilre
Is this an Official GMAC question

No! This is not an official question rather from Peterson's GMAT Book.

Thank you!
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Got it, Thanks. Do you know a way I can sort out only the official GMAC questions of GMAT club. The source filter is diabled! TIA Sajjad1994
Sajjad1994


No! This is not an official question rather from Peterson's GMAT Book.

Thank you!
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