What is the median number of employees assigned per project

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What is the median number of employees assigned per project [#permalink]

22 Aug 2004, 03:19

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What is the median number of employees assigned per project for the projects at Company Z?

(1) 25 percent of the projects at Company Z have 4 or more employees assigned to each project.

(2) 35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.

please explain, thank you

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22 Aug 2004, 12:50

Is it C ?

From the second statement we can infer that the minimum number of projects is 20.
If 7 of them has two or less employees, and 5 of them has 4 or more,
then 8 of them must have exactly 3 employees.
This means the median will be 3.

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22 Aug 2004, 18:28

Dookie wrote:

Is it C ?

From the second statement we can infer that the minimum number of projects is 20. If 7 of them has two or less employees, and 5 of them has 4 or more,
then 8 of them must have exactly 3 employees.
This means the median will be 3.

Hello, Dookie

How to infer the minimum number is 20? Could you explain more?

thanks.

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23 Aug 2004, 09:02

I am not sure if the correct answer is C.

25% is >= than 4 members
35% is >= than 2 members

But what about the rest assuming to be 40%.
It could be that 40% is between 2 and 4 members inclusive, which cannot garantuee that 3 is the median.

I would say E for this one.

Correct me if I am wrong.

P.S. I cannot figure out how come the minimum of projects is 20. Could you please explain, Dookie?

Regards,

Alex

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23 Aug 2004, 09:19

I was assuming that the number of projects has to be a whole number.

35% = 35/100 = 7/20
So the smallest number of projects has to be 20.

I'm still waiting for the Official Answer on this one.
Nice question.

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23 Aug 2004, 09:42

Hello everyone,

the OA is (C)

Does anyone figure out?

thank you.

Director

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23 Aug 2004, 10:59

Got C ..

25 have 4+project
50 have 3 project
35 have 2- project
-----
100
-----
If you take the median the ans will always be 3

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23 Aug 2004, 11:09

i'm at C, too. same reason as everyone else.

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23 Aug 2004, 14:30

with GMAT point of view how genuine is this question. I got E. Srijays reasoning seems ok like -2--4+ so 3 it is. Do you all think that there is no room for assumtion for the remaining 40 person. I don't think that the data can be interpreted well.

[#permalink] 23 Aug 2004, 14:30

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What is the median number of employees assigned per project

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