document.write( "Question 1187013: if P(E) = 0.40, P(E or F) = 0.50, and P(E and F) = 0.05, find P(F) \n" ); document.write( "

Algebra.Com's Answer #817969 by ikleyn(52786) $\"\"$ $\"About$

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\n" ); document.write( " if P(E) = 0.40, P(E or F) = 0.50, and P(E and F) = 0.05, find P(F)
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document.write( "Use the general formula of the probability theory\r\n" );
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document.write( "    P(E or F) = P(E) + P(F) - P(E and F).\r\n" );
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document.write( "Substitute the given values into the formula.  You will get this equation\r\n" );
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document.write( "    0.50 = 0.40 + P(F) - 0.05.\r\n" );
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document.write( "In this equation, only value  P(F) is unknown.  Find it from the equation\r\n" );
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document.write( "    P(F) = 0.50 - 0.40 + 0.05 = 0.15.    ANSWER\r\n" );
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