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 6 - Review - Review Exercises - Page 356: 8b

Answer

Mean: $μ_X=6$ Standard deviation: $σ_X=1.223$

Work Step by Step

Mean: $μ_X=np=8\times0.75=6$ Standard deviation: $σ_X=\sqrt {np(1-p)}=\sqrt {8\times0.75(1-0.75)}=\sqrt {8\times0.75\times0.25}=1.223$

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