Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 5 - Section 5.2 - Assess Your Understanding - Applying the Concepts - Page 279: 43b

Answer

P(1 ticket) $=\frac{21}{197}\approx0.107$

Work Step by Step

The sample space: 197 individuals. So, N(S) = 197. According to the marginal distribution (see definition, page 235) of the second column: N(1 ticket) = 21. P(1 ticket) = $\frac{N(1 ticket)}{N(S)}=\frac{21}{197}\approx0.107$
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