Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 11 - Section 11.3 - Consumer Reports - The High Cost of Convenience - Page 565: b

Answer

Yes: - the data are normally distributed with no outliers. - it is about the difference between two means. - the samples are independent and were randomly obtained. - the sample sizes are less than 5% of the populations.

Work Step by Step

The relation between the data and the corresponding z-scores (percent), in the normal probability plots, are approximately linear.
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