Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 5 - Discrete Probability Distributions - 5-2 Probability Distributions - Basic Skills and Concepts: 19

Answer

Mean:0.9, standard deviation:0.87.

Work Step by Step

Mean:$0\cdot0.377+1\cdot0.399+2\cdot0.176+3\cdot0.041+4\cdot0.005+5\cdot0+6\cdot0=0.9$. Standard deviation: $\sqrt{(0-0.9)^2\cdot0.377+(1-0.9)^2 \cdot0.399+(2-0.9)^2\cdot0.176+(3-0.9)^2\cdot0.041+(4-0.9)^2\cdot0.005+(5-0.9)^2\cdot0+(6-0.9)^2\cdot0}=0.87$.
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