Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 4 - Probability - 4-2 Basic Concepts of Probability - Basic Skills and Concepts - Page 144: 1



Work Step by Step

We know that the sum of the probalities is 1 and that $probability=\frac{number \ of \ good \ outcomes}{number\ of\ all\ outcomes}$. Therefore $P(A)+P(\overline{A})=1.$ Therefore $P(A)=\frac{1}{10000}=0.0001$ and therefore $P(\overline{A})=1-P(A)=1-0.0001=0.9999$
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