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: 39

Answer

$0.5$

Work Step by Step

We know that $probability=\frac{number \ of \ good \ outcomes}{number\ of\ all\ outcomes}$. There are 4 possibilities to have four kids: boy-boy, boy-girl, girl-boy, girl-girl. Therefore the probability of getting one of each sex (2 opportunities) is:$\frac{2}{4}≈0.5.$
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