#### Answer

a) We reject the null hypothesis.
b)$\mu_1-\mu_2$ is between -0.98 and -0.18.

#### Work Step by Step

a) Null hypothesis:$\mu_1=\mu_2$, alternative hypothesis:$\mu_1$

Published by
Pearson

ISBN 10:
0321836960

ISBN 13:
978-0-32183-696-0

a) We reject the null hypothesis.
b)$\mu_1-\mu_2$ is between -0.98 and -0.18.

a) Null hypothesis:$\mu_1=\mu_2$, alternative hypothesis:$\mu_1$

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