having the disease and n = 5, compute the expected number of tests needed, assuming independence.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
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2.4-18. In group testing for a certain disease, a blood sample was taken from each of n
individuals and part of each sample was placed in a common pool. The latter was then
tested. If the result was negative, there was no more testing and all n individuals were
declared negative with one test. If, however, the combined result was found positive, all
individuals were tested, requiring n + 1 tests. If p = 0.05 is the probability of a person's
having the disease and n = 5, compute the expected number of tests needed, assuming
independence.
Transcribed Image Text:2.4-18. In group testing for a certain disease, a blood sample was taken from each of n individuals and part of each sample was placed in a common pool. The latter was then tested. If the result was negative, there was no more testing and all n individuals were declared negative with one test. If, however, the combined result was found positive, all individuals were tested, requiring n + 1 tests. If p = 0.05 is the probability of a person's having the disease and n = 5, compute the expected number of tests needed, assuming independence.
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