Answer
See below
Work Step by Step
a) The experimental probability that a trial results in 2 heads is $\frac{4}{10}=0.4$
b) The theoretical probability is: $_3 C_2.(\frac{1}{2})^2.\frac{1}{2}=\frac{3}{8}=0.375$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 10 Counting Methods and Probability - 10.5 Find Probabilities of Independent and Dependent Events - 10.5 Exercises - Skill Practice - Page 722: 34
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