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 - Check Your Skills - Page 246: 9.25

Answer

A) Since this is an observation study, we can only claim an association between the response and explanatory variables.

Work Step by Step

B) and C) both uses strong words such as "claim" and "cause" which we aren't able to use on an observational study.
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