Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 4 - Probability - 4-2 Basic Concepts of Probability - Page 145: 14

Answer

0.20 or $ \frac{1}{5}$

Work Step by Step

20% can be expressed as a probability value between 0 and 1 by converting it to a fraction or decimal. 20/100 is equivalent to 1/5. If 1 is divided by 5 the result will be 0.20. Therefore there is a 1/5 probability of rain.
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