The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 9 - Producing Data: Experiments - Apply Your Knowledge - Page 239: 9.13a

Answer

This is an observational study, because the diet of the participants was not controlled by researchers.

Work Step by Step

This is an observational study, because the diet of the participants was not controlled by researchers.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.