Answer
$0.5$
Work Step by Step
$P(flaw)=P(Obama|No \ degree)P(No \ degree)+P(Obama|degree)P(degree)=0.52\cdot0.6+0.47\cdot0.4=0.312+0.188=0.5$
Applied Statistics and Probability for Engineers, 6th Edition
by Montgomery, Douglas C.; Runger, George C.
Published by
Wiley
ISBN 10:
1118539710
ISBN 13:
978-1-11853-971-2
Chapter 2 - Section 2-5 - Multiplication and Total Probability Rules - Exercises - Page 48: 2-126
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