Answer
Reject the hypothesis
a = 10%
Work Step by Step
Since the confidence interval doesn't have $50000, there is evidence to reject the thought that the mean income is 50000 dollars
a = 1 - 90% = 1 - .9 = .1 = 10%
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 19 - From Data Production to Inference: Part III Review - Supplementary Exercises - Page 451: 19.59
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