College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Section 9.3 - Binomial Probability - 9.3 Exercises: 4

Answer

$.3087$

Work Step by Step

Probability of success: $.7$ Probability of failure: $(1-.7)=.3$ The probability of three successes out of five attempts (implies two failures) is $(.7)^{3}\times (.3)^{2}\times 5C3=.3087$
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