Answer
See below.
Work Step by Step
We can use the one-sample z-test to test the hypotheses.
According to this: $H_0:\mu=0$, $H_a:\mu\gt0$, where $\mu$ is the average of differences in sensitivity.
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 17 - Tests of Significance: The Basics - Chapter 17 Exercises - Page 414: 17.43a
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