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

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Luis A. Afonso

Posts: 4,758
From: LIsbon (Portugal)
Registered: 2/16/05
FALSIFICATION
Posted: Jun 13, 2007 12:19 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Follow-up, in SHORT, the continuity correction leads to better results:
______With C.C._____EXACT_______Without C.C.
______0.00144______0.00156________0.00212____
Diff___0.00012_____________________0.00056____

***************
See my post Jun 13, 2007, 7:29 AM. And APPRECIATE that Jack Tomsky DID FALSIFY my evaluation

I WROTE (ipsis verbis, please check):
Date: Jun 13, 2007 7:29 AM
Author: Luis A. Afonso
Subject: Re: Help with probability&stat problem

EXACT : p(X<=10) = 0.00156
Normal Approximation
*** Without C.C.
Z = (10 - 22)/sqrt(0.2*0.8*110) = -22/ 4.1952 = -2.8604.
________________ F(Z) = 0.00212
*** With C.C.
________Z = (10 - 22 + 0.5)/ 4.1952 = -2.9796
________________________ F(Z) = 0.00144
The differences approx-EXACT are respectively

_______Without = +0.00056
_______With C.C. = -0.00012.
********

Jack´s response:

The exact probablity calculated from the binomial distribution is 0.0015595. The Afonso normal approximation is 0.002115. The "improved" Afonso normal approximation with a correction factor is 0.003061, which is worse. Jack

*******************************
Licas


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
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Bruce Weaver
6/11/07
Read Re: Help with probability&stat problem
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
Read Re: Help with probability&stat problem
Randy Poe
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Nick
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
6/11/07
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
Read Re: Help with probability&stat problem
Luis A. Afonso
6/12/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/12/07
Read Re: Help with probability&stat problem
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
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read FALSIFICATION
Luis A. Afonso
6/13/07
Read Re: FALSIFICATION
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/14/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
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
6/15/07
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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