Answer
One sample t-test.
Work Step by Step
We are interested in testing the increase of a mean (assuming that it is given), thus we will use a one sample t-test.
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 24 - Inference about Variables: Part IV Review - Test Yourself - Page 570: 24.40
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