Answer
$s=23.78~min$
Work Step by Step
$x̅=mean=80$ (see problem 1. (a))
$s=\sqrt {\frac{Σ(x_i-x̅)^2}{n-1}}=\sqrt {\frac{(48-80)^2+(88-80)^2+(57-80)^2+(109-80)^2+(111-80)^2+(93-80)^2+(71-80)^2+(63-80)^2}{8-1}}=23.78$
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 - Review - Test - Page 186: 4a
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.
