A​ new, simple test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A medical researcher selects a random sample of 1,000 adults and finds​ (by other​ means) that 1​% have this type of cancer. Each of the 1,000 adults is given the​ test, and it is found that the test indicates cancer in 99​% of those who have it and in 2​% of those who do not. Based on these​ results, what is the probability of a randomly chosen person having cancer given that the test indicates​ cancer? Of a person having cancer given that the test does not indicate​ cancer? A). Based on these​ results, what is the probability of a randomly chosen person having cancer given that the test indicates​ cancer?  B). What is the probability of a person having cancer given that the test does not indicate​ cancer?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A​ new, simple test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A medical researcher selects a random sample of 1,000 adults and finds​ (by other​ means) that 1​% have this type of cancer. Each of the 1,000 adults is given the​ test, and it is found that the test indicates cancer in 99​% of those who have it and in 2​% of those who do not. Based on these​ results, what is the probability of a randomly chosen person having cancer given that the test indicates​ cancer? Of a person having cancer given that the test does not indicate​ cancer?

A). Based on these​ results, what is the probability of a randomly chosen person having cancer given that the test indicates​ cancer? 

B). What is the probability of a person having cancer given that the test does not indicate​ cancer?

 

 

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