Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 1 - Introduction to Statistics - 1-4 Collecting Sample Data - Beyond the Basics: 30

Answer

It is a prospective study,

Work Step by Step

The study checks the same people's habits over a long period of time, so it is a prospective study.
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