Answer
P(seeing Whale or Dolphin for 2 consecutive days) = P(seeing Whale or dolphin on first day) + P(seeing whale or dolphin on second day)
= 0.85 x 0.85
= 0.7225 = 72.25%
Work Step by Step
As given above
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 13 - General Rules of Probability - Chapter 13 Exercises - Page 321: 13.30a
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