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A search engine has excellent accuracy, such that the probability of getting a relevant result for each search is 0.8. Assume that this probability is constant and that the probability of getting the relevant search results is independent of the previous search. a. Out of seven searches, what is the maximum chance of getting two irrelevant results? b. What is the probability that it will take at least three searches until an irrelevant result is found?

A search engine has excellent accuracy, such that the probability of getting a relevant result for each search is 0.8. Assume that this probability is constant and that the probability of getting the relevant search results is independent of the previous search. a. Out of seven searches, what is the maximum chance of getting two irrelevant results? b. What is the probability that it will take at least three searches until an irrelevant result is found?

College Algebra
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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A search engine has excellent accuracy, such that the probability of getting a relevant result for each search is 0.8. Assume that this probability is constant and that the probability of getting the relevant search results is independent of the previous search.
a. Out of seven searches, what is the maximum chance of getting two irrelevant results?
b. What is the probability that it will take at least three searches until an irrelevant result is found?

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