Answer
$0.684$
Work Step by Step
We can use the multiplication rule: P(at least one positive):1-P(no one of them are positive) =$1-(1-0.134)^{8}=0.684$ This probability is high, so they should make other tests.
Elementary Statistics (12th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0321836960
ISBN 13:
978-0-32183-696-0
Chapter 4 - Probability - 4-5 Multiplication Rule: Complements and Conditional Probability - Basic Skills and Concepts - Page 174: 31
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