Answer
Mean:
$μ_X=6.75$
Standard deviation:
$σ_X=1.299$
Work Step by Step
Mean:
$μ_X=np=9×0.75=6.75$
Standard deviation:
$σ_X=\sqrt {np(1−p)}=\sqrt {9\times0.75(1-0.75)}=\sqrt {9\times0.75\times0.25}=1.299$
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 - Section 6.2 - Assess Your Understanding - Vocabulary and Skill Building - Page 344: 31c
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
