Answer
mean $2.02$
variance $1.26$
standard deviation $1.12$
Work Step by Step
mean $\mu=\sum X_i \cdot p_i=2.02$
variance $\sigma^2=\sum (X_i-\mu)^2p_i=1.26$
standard deviation $\sigma=\sqrt {\sigma^2}=1.12$
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 5 - Discrete Probability Distributions - Chapter Quiz - Page 307: 17
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