#### Answer

$-0.77$.

#### Work Step by Step

The z-score: $z=\frac{value-mean}{standard \ deviation}=\frac{6-11.4}{7}=-0.77$.

Published by
Pearson

ISBN 10:
0321836960

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

$-0.77$.

The z-score: $z=\frac{value-mean}{standard \ deviation}=\frac{6-11.4}{7}=-0.77$.

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