The following table classifies 500 people who are given the Covid-19 test by their Covid-19 test positive or negative and by whether or not have Covid-19 virus. (IN IMAGE BELOW) If one of these 500 people is selected randomly, find the following probabilities: a) P (A2 ∪ B2) b) P B1 | A1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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The following table classifies 500 people who are given the Covid-19 test by their Covid-19 test positive or negative and by whether or not have Covid-19 virus.

(IN IMAGE BELOW)

If one of these 500 people is selected randomly, find the following probabilities:

a) P (A2 ∪ B2)

b) P B1 | A1 

B1: Have Covid-19 B2: Does not have Covid-19
virus
virus
A1: Test positive
115
75
A2: Test Negative
25
285
Transcribed Image Text:B1: Have Covid-19 B2: Does not have Covid-19 virus virus A1: Test positive 115 75 A2: Test Negative 25 285
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