Suppose it is estimated that out of about 2 million people in Perth who are not in isolation, 100000 have a particular virus. Let A be the event that a person selected at random on a university campus has the virus. (a) Estimate the probability P(A). (b) If there are 8000 people on campus, how many do you expect to have the virus? (c) Let B be the event that the randomly-selected person tests negative using a rapid-antigen-test which has a false negative rate of 20%. What is P(B|A)? (d) What is the probability that a person selected at random has the virus and

Suppose it is estimated that out of about 2 million people in Perth who are not in isolation, 100000 have a particular virus. Let A be the event that a person selected at random on a university campus has the virus. (a) Estimate the probability P(A). (b) If there are 8000 people on campus, how many do you expect to have the virus? (c) Let B be the event that the randomly-selected person tests negative using a rapid-antigen-test which has a false negative rate of 20%. What is P(B|A)? (d) What is the probability that a person selected at random has the virus and

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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