For married couples living in a certain suburb, theprobability that the husband will vote in a school boardelection is 0.21, the probability that the wife will vote inthe election is 0.28, and the probability that they will bothvote is 0.15. What is the probability that at least one ofthem will vote?

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.CR: Chapter 12 Review
Problem 11CR
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For married couples living in a certain suburb, the
probability that the husband will vote in a school board
election is 0.21, the probability that the wife will vote in
the election is 0.28, and the probability that they will both
vote is 0.15. What is the probability that at least one of
them will vote?

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