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#26 2012-06-01 09:04:52
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Help with probability!
Oh,sorry. 
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#27 2012-06-01 09:06:46
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with probability!
No problem, I need to look at how a post really looks to latex it right. Also a space for M users implies multiplication.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#28 2012-06-01 09:08:58
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Help with probability!
so is the answer 1/6 or 1/36?
The answer, as bobbym said, is 1/36.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#29 2012-06-01 09:12:47
- sandy262727
- Guest
Re: Help with probability!
Thank you so much okay I am stuck on one I found the mean which is 2.1, the variance which is 1.2, and the standard deviation of 1.1 than the second part of the question asks me If you were taking a servay on the programs that were watched on television, how many program diaries would you send to each household in this servay?
#30 2012-06-01 09:18:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with probability!
Hi sandy262727;
I do not understand the question?! Is there anymore.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#31 2012-06-01 09:19:33
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Help with probability!
Hi Sandy
What kind of survey is it? What kind of results do you get from it?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#32 2012-06-01 09:25:09
- sandy262727
- Guest
Re: Help with probability!
Number of television shows watched which is 1,2,3,4. The probability of these numbers are 0.3, 0.4, 0.12, and 0.16. If you were taking a survey on the number of programs watched, how many program diaries would you sent out to each house hold.
#33 2012-06-01 09:28:06
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with probability!
Hi sandy262727;
I am not following the question. What are we trying to do?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#34 2012-06-01 09:30:55
- sandy262727
- Guest
Re: Help with probability!
I am trying to find out the number of program diaries that need to be sent out to each house hold
#35 2012-06-01 09:35:59
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Help with probability!
Based on what? What do you have given in the question?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#36 2012-06-01 09:38:12
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with probability!
Hi;
I am trying to find out the number of program diaries that need to be sent out to each house hold.
To do what? What is a program diary?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#37 2012-06-01 19:21:33
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,621
Re: Help with probability!
hi sandy262727
As I understand it , your question is this:
A survey is to be carried out to determine how many tv programmes are watched in a number of households.
I'm assuming a program diary is just a form so that people can record their viewing.
In which case just send one per household; why have more than one in a house?
In post #29 you say you have already calculated mean, variance etc. Is this part of the same question?
Maybe it would help if you were to post the whole question, including the bits you have already done.
Thanks.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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