Olshansky
Sent: Wednesday, August 15, 2007 2:06 AM
To: sigalit mangut-leiba; r-help
Subject: Re: [R] binomial simulation
No wonder that you are getting overflow, since
gamma(N+1) = n! and 200! (200/e)^200 10^370.
There exists another way to compute C(N,k). Let me
know if you need
No wonder that you are getting overflow, since
gamma(N+1) = n! and 200! (200/e)^200 10^370.
There exists another way to compute C(N,k). Let me
know if you need this and I will explain to you how
this can be done.
But do you really need to compute the individual
probabilities? May be you need
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Moshe Olshansky
Sent: Wednesday, August 15, 2007 2:06 AM
To: sigalit mangut-leiba; r-help
Subject: Re: [R] binomial simulation
No wonder that you are getting overflow, since
gamma(N+1) = n! and 200! (200/e)^200 10^370
: Wednesday, August 15, 2007 2:06 AM
To: sigalit mangut-leiba; r-help
Subject: Re: [R] binomial simulation
No wonder that you are getting overflow, since
gamma(N+1) = n! and 200! (200/e)^200 10^370.
There exists another way to compute C(N,k). Let me
know if you need this
and I will explain to you
Thank you,
I'm trying to run the joint probabilty:
C(N,k)*p^k*(1-p)^(N-k)*C(k,m)*q^m*(1-q)^(k-m)
and get the error: Error in C(N, k) : object not interpretable as a factor
so I tried the long way:
gamma(N+1)/(gamma(k+1)*(gamma(N-k)))
and the same with k, and got the error:
1: value out of
Hi,
The probability of false detection is: P(T+ | D-)=1-P(T+ | D+)=0.05.
and I want to find the joint probability P(T+,D+)=P(T+|D+)*P(D+)
Thank you for your reply,
Sigalit.
On 8/13/07, Moshe Olshansky [EMAIL PROTECTED] wrote:
Hi Sigalit,
Do you want to find the probability P(T+ = t AND D+ =
As I understand this,
P(T+ | D-)=1-P(T+ | D+)=0.05
is the probability not to detect desease for a person
at ICU who has the desease. Correct?
What I asked was whether it is possible to mistakenly
detect the desease for a person who does not have it?
Assuming that this is impossible the formula
hello,
I asked about this simulation a few days ago, but still i can't get what i
need.
I have 2 units: icu and regular. from icu I want to take 200 observations
from binomial distribution, when probability for disease is: p=0.6.
from regular I want to take 300 observation with the same
