Answer
(a) 0.0049
Work Step by Step
Here, we have: μ = 100, σ = 15. n = 60
Using the z-value approach:
$z = \frac{x̅ - μ}{σ_{x̅}} = \frac{105-100}{1.936} = 2.58$
Using Table A of the book, we have:
$
P(z > 2.58) = 0.0049$
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 19 - From Data Production to Inference: Part III Review - Test Yourself - Page 445: 19.18
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