Answer
$8.08\%$
Work Step by Step
$\text{z-score}=\frac{\text{data item-mean}}{\text{standard deviation}}$
Hence here the z-score: $\frac{88-74}{10}=1.4$
Then, according to the table, the answer is: $100-91.92=8.08\%$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 12 - Statistics - Chapter 12 Test - Page 838: 19
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