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 344: 14.43a

Answer

The requirements are satisfied.

Work Step by Step

For a normal approximation of the binomial distribution the requirements are: $np\geq10$ and $nq\geq10$. Here $np=30\cdot0.63=18.9\geq10$, $nq=30\cdot(1-0.63)=11.1\geq10$ thus the requirements are satisfied.
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