The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 14 - Binomial Distributions - Chapter 14 Exercises - Page 343: 14.38b

Answer

.2060

Work Step by Step

Using a z-table, we find: P(X >18) = P(X = 18) + P(X = 19) + P(X = 20) = .1369 + .0576 + .0115 = .2060
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