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  • Card 15 / 26:
    Y and Z are independent events.

    Rewrite the basic Addition Rule P ( Y OR Z ) = P ( Y ) + P ( Z ) - P ( Y AND Z ) using the information that Y and Z are independent events.Use the rewritten rule to find P ( Z ) if P ( Y OR Z ) = 0.71 and P ( Y ) = 0.42.

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Source:  OpenStax, Introductory statistics. OpenStax CNX. May 06, 2016 Download for free at http://legacy.cnx.org/content/col11562/1.18
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