Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 10 Counting Methods and Probability - Chapter Test - Page 737: 25



Work Step by Step

Using the formula for binomial experiments, the probability is: $P(k\geq8)=P(k=8)+P(k=9)=_{9}C_{8}(0.9)^{8}(0.1)^{9-8}+_{9}C_{9}(0.9)^{9}(0.1)^{9-9}\approx0.775$
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