The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 24 - Inference about Variables: Part IV Review - Supplementary Exercises - Page 574: 24.61

Answer

See below.

Work Step by Step

A two sample z-test for the difference in proportions can be done if the number of successes and failures is both at least $5$ of both samples. Thus here we cannot do that safely because the number of failures in the sample of blacks is only $1$.
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