Question
Suppose that a certain test for leukemia has been found to have the following reliability. Among those who do have leukemia, the test is correct
Suppose that a certain test for leukemia has been found to have the following reliability.
Among those who do have leukemia, the test is correct 98% of the time.
Among those who do not have leukemia, the test is correct 94% of the time.
Currently, about 0.13% of the US population has leukemia.
(a) Draw a tree diagram to represent this situation [This you'll have to do on paper, and submit it via the assignment "Final Exam handwritten work"]
(b) Interpret this situation as we have done in the course using an ideal data set of 100,000,000 people. Fill in a definite number in each cell of the table, not just an expression.
| tests positive | tests negative | total |
has leukemia | |||
doesn't have leukemia | |||
total |
(c) What is the probability that a randomly selected person receives a false negative?
(d) Is the probability in part (c) conditional or unconditional, and how can you tell?
(e) If you test positive, what is the probability that you actually have leukemia? Write your answer as a fraction.
(f) Is the probability in part (e) conditional or unconditional, and how can you tell?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started