Answer
Since the confidence interval is based on a sample of Americans aged 15 or older, it cannot be used to estimate the mean amount of time a 9-year-old American spends eating and drinking each day.
Work Step by Step
Given above.
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 9 - Section 9.2 - Assess Your Understanding - Applying the Concepts - Page 449: 30d
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