Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - Review Exercises - Page 842: 95b

Answer

$P(freshman,sophomore~or~junior)=31+26+25=82$% $=0.82$

Work Step by Step

The events "winner is a freshman," "winner is a sophomore," and "winner is a junior" are independent. $P(freshman,sophomore~or~junior)=P(freshman)+P(sophomore)+P(junior)=31+26+25=82$
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