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*To*: "Srinath Reddy Bodala" <Srinath.Bodala@asu.edu>*Subject*: Re: Clarification needed on DBN question*From*: "Subbarao Kambhampati" <rao@asu.edu>*Date*: Sun, 10 Dec 2006 07:04:55 -0700*Cc*: cse471-f06@parichaalak.eas.asu.edu*Domainkey-signature*: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:references:x-google-sender-auth; b=ke0ol7es1Sv9b4XyS1bZlLXX85gQCWUuUCn/H7+enG2zHOFxe8s3noI3hNG2GQjzlKEExf2JKM7tPuTpplA7vPp2ypLJvysnPTZ4cbmTuRz0IPDzROPFaB1ZvFcpGhiKjt66hMToMloD1JLCOKgAhOkZC7pwQOFoDuKONshrmCE=*In-reply-to*: <8ee835760612092335gd826035n124e0d293da71a93@mail.gmail.com>*References*: <8ee835760612092335gd826035n124e0d293da71a93@mail.gmail.com>*Sender*: subbarao2z2@gmail.com

In this part of the question you calculate the probability that the patient has

flu on the *second* day given that the test on the *second* day came positive.

(In the next part, you have an argument with your friend about the flu probability

on the first day).

Rao

On 12/10/06, **Srinath Reddy Bodala** <Srinath.Bodala@asu.edu> wrote:

Dear Prof,

I need clarification regarding a question on DBN. I am reproducing the

question here for your convenience.

Question:

Given your representation above, after one days' stay in the hospital

the patient is tested and the test came positive. (1) What is the

probability that the patient actually has flu? Show your calculation.

I have doubt regarding whether I have to calculate probability of

patient having flu on the first day or second day.

Hope I am clear.

Thanks,

Srinath Reddy B.

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