p=.6; q=.95
>>
> choose(N,k)*p^k*(1-p)^(N-k)*choose(k,m)*q^m*(1-q)^(k-m)
>> 6.554505e-41
>>
>> -Original Message-
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] On Behalf
>> Of Moshe Olshansky
>> Sent: Wednesday, August 15, 200
---
> 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)
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 >
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 so
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 ran
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 i
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
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 probability
