Answer
Most people will not admit not wearing seat belts because its against law, so response bias is observed.
Bias in same direction is expected in surveys about seat belts due to the reason already mentioned.
Work Step by Step
No steps
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 8 - Producing Data: Sampling - Chapter 8 Exercises - Page 223: 8.36
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