Answer
0.52822
Work Step by Step
The probability of having 4 or 5 failures is .
$5*(.7)^4*(0.3)^1+0.7^5=0.52822$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
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 - Page 675: 9
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