Answer
0.25
Work Step by Step
$P(20.5 \leq x \leq 25.5) = ∫_{20.5}^{25.5} f(x).dx$
= $∫_{20.5}^{25.5} \frac{1}{d-c}.dx$
= $∫_{20.5}^{25.5} \frac{1}{20}.dx$
= 1/20 (25.5-20.5) = 5/20 = 0.25
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 5.1 - 5.19 - Learning the Mechanics - Page 229: 5.4f
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