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Probability with discrete random distribution
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09 Oct 2018, 08:01
09 Oct 2018, 08:01
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Question Stats:
55% (01:00) correct
44% (02:15) wrong based on 27 sessions
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Hi Guys,
Does anybody know how to solve this question?
A class with 10 students will be split into five teams of two students each. There are four women and six men in the class. What is the probability that the first team chosen will have two men?
Thanks!!
Does anybody know how to solve this question?
A class with 10 students will be split into five teams of two students each. There are four women and six men in the class. What is the probability that the first team chosen will have two men?
Show: :: OA
0.8791
Thanks!!
Re: Probability with discrete random distribution
[#permalink]
09 Oct 2018, 09:27
09 Oct 2018, 09:27
Expert Reply
Hi,
please post the question under the right sub-forum. This is a numeric entry question, not a multiple ones.
Thank you so much
_________________
please post the question under the right sub-forum. This is a numeric entry question, not a multiple ones.
Thank you so much
_________________
Retired Moderator
Joined: 07 Jun 2014
Posts: 4806
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Re: Probability with discrete random distribution
[#permalink]
09 Oct 2018, 12:10
09 Oct 2018, 12:10
3
1
Expert Reply
Could you share the source please
The question asks about choosing 2 ppl from 10 people and the probability of the two being male.
There are 4 women and 6 men.
The number of ways we can select 2 men = \(C_2^{6}=\frac{6!}{2! \times 4!}=15\).
The number of ways we can select 2 people = \(C_2^{10}=\frac{10!}{2! \times 8!}=45\).
So the probability of selecting 2 men = \(\frac{15}{45}=0.333\)
_________________
The question asks about choosing 2 ppl from 10 people and the probability of the two being male.
There are 4 women and 6 men.
The number of ways we can select 2 men = \(C_2^{6}=\frac{6!}{2! \times 4!}=15\).
The number of ways we can select 2 people = \(C_2^{10}=\frac{10!}{2! \times 8!}=45\).
So the probability of selecting 2 men = \(\frac{15}{45}=0.333\)
_________________
Sandy
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If you found this post useful, please let me know by pressing the Kudos Button
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Re: Probability with discrete random distribution
[#permalink]
10 Oct 2018, 06:11
10 Oct 2018, 06:11
Hi Sandy
Here is the source:
http://cws.cengage.co.uk/aswsbe/student ... h05_02.htm
Their answer is: 0.8791. I cannot get the same answer
Thanks
Here is the source:
http://cws.cengage.co.uk/aswsbe/student ... h05_02.htm
Their answer is: 0.8791. I cannot get the same answer
Thanks
sandy wrote:
Could you share the source please
The question asks about choosing 2 ppl from 10 people and the probability of the two being male.
There are 4 women and 6 men.
The number of ways we can select 2 men = \(C_2^{6}=\frac{6!}{2! \times 4!}=15\).
The number of ways we can select 2 people = \(C_2^{10}=\frac{10!}{2! \times 8!}=45\).
So the probability of selecting 2 men = \(\frac{15}{45}=0.333\)
The question asks about choosing 2 ppl from 10 people and the probability of the two being male.
There are 4 women and 6 men.
The number of ways we can select 2 men = \(C_2^{6}=\frac{6!}{2! \times 4!}=15\).
The number of ways we can select 2 people = \(C_2^{10}=\frac{10!}{2! \times 8!}=45\).
So the probability of selecting 2 men = \(\frac{15}{45}=0.333\)
Re: Probability with discrete random distribution
[#permalink]
08 Dec 2018, 20:03
08 Dec 2018, 20:03
I also got 1/3 as the answer, but halam's spoiler gives a different answer. Can anyone comment?
Re: Probability with discrete random distribution
[#permalink]
09 Dec 2018, 02:00
09 Dec 2018, 02:00
Expert Reply
Guys please,
forget these kinds of questions. Maybe they are good just to grasp the concept of probability or other concepts BUT they are not GRE questions.
Why you bother you with this obscure resources where here on the board you do have almost countless questions from the best NON-official resources and you can exploit just the probability tag above to have all the questions you wanna to practice
Tag probability https://gre.myprepclub.com/forum/search.ph ... tag_id=253
You have also almost all GRE books
The last collection for the GRE quant 2019
The Princeton review 1014 questions
Manhattan GRE 5lb books with 1000 questions
Moreover, all the official question explained ALL GRE Official Guides ANDDD all the powerprep software questions GRE - PowerPrep® The FREE Practice Tests Explained 2019
I do not know why people or students go always through the difficult and NOT reliable way/resources.
From what I am seeing here http://cws.cengage.co.uk/aswsbe/students/stu_title.html those are problems for I do not know if is a course or else about Statistics for Business and Economics, which at the core are - true - the same concepts but you are studying for the GRE and the way it crafts the questions. That is another thing.
_________________
forget these kinds of questions. Maybe they are good just to grasp the concept of probability or other concepts BUT they are not GRE questions.
Why you bother you with this obscure resources where here on the board you do have almost countless questions from the best NON-official resources and you can exploit just the probability tag above to have all the questions you wanna to practice
Tag probability https://gre.myprepclub.com/forum/search.ph ... tag_id=253
You have also almost all GRE books
The last collection for the GRE quant 2019
The Princeton review 1014 questions
Manhattan GRE 5lb books with 1000 questions
Moreover, all the official question explained ALL GRE Official Guides ANDDD all the powerprep software questions GRE - PowerPrep® The FREE Practice Tests Explained 2019
I do not know why people or students go always through the difficult and NOT reliable way/resources.
From what I am seeing here http://cws.cengage.co.uk/aswsbe/students/stu_title.html those are problems for I do not know if is a course or else about Statistics for Business and Economics, which at the core are - true - the same concepts but you are studying for the GRE and the way it crafts the questions. That is another thing.
_________________
Re: Probability with discrete random distribution
[#permalink]
09 Dec 2018, 10:06
09 Dec 2018, 10:06
Carcass wrote:
Guys please,
forget these kinds of questions. Maybe they are good just to grasp the concept of probability or other concepts BUT they are not GRE questions.
Why you bother you with this obscure resources where here on the board you do have almost countless questions from the best NON-official resources and you can exploit just the probability tag above to have all the questions you wanna to practice
Tag probability https://gre.myprepclub.com/forum/search.ph ... tag_id=253
You have also almost all GRE books
The last collection for the GRE quant 2019
The Princeton review 1014 questions
Manhattan GRE 5lb books with 1000 questions
Moreover, all the official question explained ALL GRE Official Guides ANDDD all the powerprep software questions GRE - PowerPrep® The FREE Practice Tests Explained 2019
I do not know why people or students go always through the difficult and NOT reliable way/resources.
From what I am seeing here http://cws.cengage.co.uk/aswsbe/students/stu_title.html those are problems for I do not know if is a course or else about Statistics for Business and Economics, which at the core are - true - the same concepts but you are studying for the GRE and the way it crafts the questions. That is another thing.
forget these kinds of questions. Maybe they are good just to grasp the concept of probability or other concepts BUT they are not GRE questions.
Why you bother you with this obscure resources where here on the board you do have almost countless questions from the best NON-official resources and you can exploit just the probability tag above to have all the questions you wanna to practice
Tag probability https://gre.myprepclub.com/forum/search.ph ... tag_id=253
You have also almost all GRE books
The last collection for the GRE quant 2019
The Princeton review 1014 questions
Manhattan GRE 5lb books with 1000 questions
Moreover, all the official question explained ALL GRE Official Guides ANDDD all the powerprep software questions GRE - PowerPrep® The FREE Practice Tests Explained 2019
I do not know why people or students go always through the difficult and NOT reliable way/resources.
From what I am seeing here http://cws.cengage.co.uk/aswsbe/students/stu_title.html those are problems for I do not know if is a course or else about Statistics for Business and Economics, which at the core are - true - the same concepts but you are studying for the GRE and the way it crafts the questions. That is another thing.
Hello, thank you for your suggestion. What you said is true and it is a good reminder. I am using the tags for my weakness areas and wasn't paying attention to the sources. What do you suggest I limit the sources to? Perhaps: Princeton Review, Barron's, and maybe Magoosh? I finished the whole Manhattan prep book 1st edition but I am having trouble breaking the 80% in quantitative, so I am looking for the hardest questions under the tags in my area of weaknesses.
Re: Probability with discrete random distribution
[#permalink]
09 Dec 2018, 11:12
09 Dec 2018, 11:12
1
Expert Reply
Almost all the questions posted on the board are good questions.
maybe some question is ambiguous. However, there is to learn even form those. Of course, we talk about non-official questions.
MGRE, Magoosh probably create the best material. Even our tests are pretty good and in line with the real test.
What I mentioned, probably, are the best resources among all we do have here on the board.
Regards
_________________
maybe some question is ambiguous. However, there is to learn even form those. Of course, we talk about non-official questions.
MGRE, Magoosh probably create the best material. Even our tests are pretty good and in line with the real test.
What I mentioned, probably, are the best resources among all we do have here on the board.
Regards
_________________
Re: Probability with discrete random distribution
[#permalink]
13 Dec 2018, 09:49
13 Dec 2018, 09:49
Carcass wrote:
Almost all the questions posted on the board are good questions.
maybe some question is ambiguous. However, there is to learn even form those. Of course, we talk about non-official questions.
MGRE, Magoosh probably create the best material. Even our tests are pretty good and in line with the real test.
What I mentioned, probably, are the best resources among all we do have here on the board.
Regards
maybe some question is ambiguous. However, there is to learn even form those. Of course, we talk about non-official questions.
MGRE, Magoosh probably create the best material. Even our tests are pretty good and in line with the real test.
What I mentioned, probably, are the best resources among all we do have here on the board.
Regards
So would you recommend to skip questions where the source is not specified for now and only do them once I have absolutely exhausted all resources?
Re: Probability with discrete random distribution
[#permalink]
13 Dec 2018, 10:28
13 Dec 2018, 10:28
1
Expert Reply
yeah, probably.
However, practicing all the questions on greprepclub I think you are almost overwhelmed.
But in case you have exhausted them, go for the rest.
Regards
_________________
However, practicing all the questions on greprepclub I think you are almost overwhelmed.
But in case you have exhausted them, go for the rest.
Regards
_________________
Re: Probability with discrete random distribution
[#permalink]
04 Oct 2019, 12:06
04 Oct 2019, 12:06
Answer: 1/3
6c2 / 10c2
6c2 / 10c2
Re: Probability with discrete random distribution
[#permalink]
26 Aug 2023, 09:52
26 Aug 2023, 09:52
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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