a) If four people are tested for the disease, what is the probability that at least three of them receive accurate test results? b) In an area where q = 5% of people are infected, a man’s test result is positive. What is probability that it is a false positive
a) If four people are tested for the disease, what is the probability that at least three of them receive accurate test results? b) In an area where q = 5% of people are infected, a man’s test result is positive. What is probability that it is a false positive
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Question
Let's say that a certain reagent is created to test for an infectious disease. The test has an accuracy rate of p = 90%, and the accuracy does not depend on whether or not the patient is actually infected.
a) If four people are tested for the disease, what is the probability that at least
three of them receive accurate test results?
b) In an area where q = 5% of people are infected, a man’s test result is
positive. What is probability that it is a false positive (which means that he is not
infected but the test is positive due to inaccuracy)?
*please do a-b and either type or write you work and answers on paper* thank you!
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