Elementary Statistics (12th Edition)

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

Chapter 9 - Inferences from Two Samples - Review - Chapter Quick Quiz: 9

Answer

False.

Work Step by Step

The two population standard deviations don't have to be known, but the sample must be large or normally distributed. Hence it is false.
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