Answer
5
Work Step by Step
This is just a Bernoulli trial with $n = 10$ and $p = 1/2$. So the expected number of heads is $np = 10(1/2) = 5$.
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 7 - Section 7.4 - Expected Value and Variance - Exercises - Page 492: 2
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