Statistics: Informed Decisions Using Data (4th Edition)

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

Chapter 7 - Section 7.2 - Assess Your Understanding - Applying the Concepts - Page 380: 52e

Answer

Relative frequencies are larger than normal probabilities. Yes, the normal model is suitable for describing the birth weight.

Work Step by Step

From the table computed in part (d), it can be seen that the normal probabilities are less compared to the relative frequencies. The expected proportion is similar to the actual proportions even if the normal model miscalculates the number of babies with weight far from the mean.
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