#### Answer

$0.9981$

#### Work Step by Step

$P(at \ least \ one )=1-P(none )=1-(1-0.67)^{4}=0.9981$

Published by
Pearson

ISBN 10:
0321836960

ISBN 13:
978-0-32183-696-0

$0.9981$

$P(at \ least \ one )=1-P(none )=1-(1-0.67)^{4}=0.9981$

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