Answer
(a) Nonresponse bias.
(b) Cold Stone Creamery can use callbacks.
Work Step by Step
(a) More than 97% of the individuals selected to be in the sample did not respond to the questionnaire.
(b) It can phone those who did not respond.
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 1 - Section 1.5 - Assess Your Understanding - Vocabulary and Skill Building - Page 42: 10
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