Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 3 - Probability - Supplementary Exercises 3.154 - 3.199 - Applying the Concepts - Intermediate - Page 173: 3.178b

Answer

$P$(wheelchair users who have installed all five features) = $\frac{9}{306}$ = $2.9412$%

Work Step by Step

P(an event) = No of favorable outcomes/ total no of outcomes. Favorable outcomes= wheelchair users who have installed all five features = 9. Total outcomes = total wheel chair users = 306.
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