document.write( "Question 723569: Event A and Event B are mutually exclusive. P(A) =.27 and P(B) = .31 . What is P(A or B) ? \n" ); document.write( "

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Event A and Event B are mutually exclusive. P(A) =.27 and P(B) = .31 . What is P(A or B)
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document.write( "Since they are mutually exclusive, they cannot both happen, so P(A and B) = 0\r\n" );
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document.write( "P(A or B) = P(A) + P(B) - P(A and B)\r\n" );
document.write( "P(A or B) = .27  + .31  -    0\r\n" );
document.write( "P(A or B) = .58\r\n" );
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document.write( "Edwin

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