Answer
0.6826
Work Step by Step
Using Table-IV, we have:
$P(z \leq -1) = 0.8413$
$P(z \geq 1) = 0.1587
$P(-1 \leq z \leq 1) = 0.8413 - 0.1587 = 0.6826
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 5 - Continuous Random Variables - Exercises 5.20 - 5.52 - Learning the Mechanics - Page 241: 5.25e
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