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Topic: Help with probability&stat problem
Replies: 47   Last Post: Jun 16, 2007 4:32 AM

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tutorny

Posts: 39
Registered: 1/28/06
Re: Help with probability&stat problem
Posted: Jun 11, 2007 3:42 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply


> Think again. How would you work out the probability that exactly 30
> left? See if your textbook has any examples like that.


Hi Bruce, I have no clue. My book doesn't have anything even remotely
close to this.

If I want to get exactly 30, should I do p(x<=30.5) - p(x<=29.5),
which will come to P(z <= 2.0261) - P(z <= 1.7878) = 0.9786 - 0.9631 =
0.0155. So, P(exactly 30 left the program) = 1.55%

And, P(x<=30) = P(x<=29.5) + P(x=30) = 0.9631 + 0.0155 = 0.9786 =
97.86%

Does that make sense? I'm so confused!

Thanks!



Date Subject Author
6/11/07
Read Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
briggs@encompasserve.org
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Randy Poe
6/11/07
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tutorny
6/11/07
Read Re: Help with probability&stat problem
Bruce Weaver
6/11/07
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tutorny
6/11/07
Read Re: Help with probability&stat problem
Bruce Weaver
6/11/07
Read Re: Help with probability&stat problem
C6L1V@shaw.ca
6/11/07
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Randy Poe
6/11/07
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tutorny
6/11/07
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Nick
6/11/07
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Jack Tomsky
6/11/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/11/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/11/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/11/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
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Luis A. Afonso
6/12/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
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Luis A. Afonso
6/12/07
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Jack Tomsky
6/12/07
Read Binomial law DF: a simple program
Luis A. Afonso
6/13/07
Read Re: Binomial law DF: a simple program
Jack Tomsky
6/13/07
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Luis A. Afonso
6/13/07
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Anon.
6/13/07
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Jack Tomsky
6/13/07
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Jack Tomsky
6/13/07
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Luis A. Afonso
6/13/07
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Jack Tomsky
6/13/07
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Anon.
6/13/07
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Luis A. Afonso
6/13/07
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Jack Tomsky
6/13/07
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Jack Tomsky
6/13/07
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Anon.
6/13/07
Read FALSIFICATION
Luis A. Afonso
6/13/07
Read Re: FALSIFICATION
Jack Tomsky
6/13/07
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Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/14/07
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Luis A. Afonso
6/14/07
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Luis A. Afonso
6/14/07
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Jack Tomsky
6/14/07
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Luis A. Afonso
6/15/07
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Luis A. Afonso
6/15/07
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Jack Tomsky
6/15/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/15/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/15/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/16/07
Read Re: Help with probability&stat problem
Luis A. Afonso

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