Suppose that approximately 20% of Americans have developed antibodies for COVID-19. Suppose that a certain test which is used to determine whether a person has antibodies gives false negatives 3% of the time and false positives 4% of the time. 97 Test + Has antibodies 20 .03 Test .04 Test + .80 No antibodies 96 Find the missing four values in the table below. Show all pertinent work below the table. Test – Results of test No Test Positive Negative Probability person has antibodies .20 Probability person does not have antibodies 80

MATLAB: An Introduction with Applications
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Suppose that approximately 20% of Americans
have developed antibodies for COVID-19.
Suppose that a certain test which is used to
determine whether a person has antibodies gives
false negatives 3% of the time and false positives
.97
Test +
Has
antibodies
.20
.03
Test
.04
Test +
No
antibodies
96
4% of the time.
.80
Find the missing four values in the table below.
Show all pertinent work below the table.
Test –
Results of test
No Test Positive Negative
Probability person has antibodies
.20
Probability person does not have antibodies
.80
Transcribed Image Text:Suppose that approximately 20% of Americans have developed antibodies for COVID-19. Suppose that a certain test which is used to determine whether a person has antibodies gives false negatives 3% of the time and false positives .97 Test + Has antibodies .20 .03 Test .04 Test + No antibodies 96 4% of the time. .80 Find the missing four values in the table below. Show all pertinent work below the table. Test – Results of test No Test Positive Negative Probability person has antibodies .20 Probability person does not have antibodies .80
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