Answer
$11$
Work Step by Step
Using the formula for the sample mean $\bar x$ :
$\bar x=\frac{\Sigma x_{i}}{n}=\frac{20+13+4+8+10}{5}=\frac{55}{5}=11$
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 3 - Section 3.1 - Assess Your Understanding - Vocabulary and Skill Building - Page 135: 7
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