2 - Using clinical studies the following approximates to...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Pr ( A B )= Pr ( B ) · Pr ( A | B ) Pr ( A | B )= Pr ( A B ) Pr ( B )
Background image of page 2
3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4
Background image of page 4
5
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6
Background image of page 6
7
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
nnnnnnnnnn 8 What is the probability that a family with two children has two boys, given they have at least one boy? Assume each of the possibilities BB, BG, GB, and GG are equally likely, where B represents a boy and G a girl. Note that the order does matter here.
Background image of page 8
9
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 Diagnosing Tuberculosis . A convenient test for tuberculosis is purified protein derivative (PPD) skin test. This test is cheap but sometimes predicts a patient has tuberculosis when in fact he/she does not, and also it may show negative when in fact the patient has tuberculosis. T: event that patient has tuberculosis. P: event that patient’s test is positive.
Background image of page 10
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Using clinical studies the following approximates to probabilities have been observed Estimate the probabilities that a patient who tested positive in fact has tuberculosis, and the probability that a patient who tested negative has tuberculosis. It is also known You may use Bayess Theorem: Let A and B be events. Then Pr ( B | A ) = Pr ( B ) Pr ( A | B ) Pr ( A ) = Pr ( B ) Pr ( A | B ) Pr ( B ) Pr ( A | B ) + Pr ( B ) Pr ( A | B ) Pr ( W | T ) = 0 . 775 , Pr ( W | T ) = 0 . 15 , Pr ( W | T ) = 0 . 225 , Pr ( W | T ) = 0 . 85 Pr ( T ) . 002 ....
View Full Document

This note was uploaded on 04/11/2011 for the course MACM 201 taught by Professor Marnimishna during the Spring '09 term at Simon Fraser.

Page1 / 10

2 - Using clinical studies the following approximates to...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online