document.write( "Question 1145319: Let E, F be events; p(E)= 0.6, p(F)= 0.4, p(E and F)= .15\r
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Algebra.Com's Answer #766550 by ikleyn(52835) $\"\"$ $\"About$

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document.write( "(a)  p(E or F) = apply the general formula     = p(E) + P(F) - p(E and F) = \r\n" );
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document.write( "               = now substitute the given data = 0.6 + 0.4 - 0.15 = 0.85.    ANSWER\r\n" );
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document.write( "(B)  p(E^c) = the complement to p(E) = 1 - p(E) = 1 - 0.6 = 0.4.             ANSWER\r\n" );
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document.write( "(C)  the set ( E and F^c)  consists of those elements of E that do not belong to F.\r\n" );
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document.write( "     In other words,  ( E and F^c)  is  E \ (E and F).\r\n" );
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document.write( "     Therefore,  p(E and F^c) = p(E) - p(E and F) = 0.6 - 0.15 = 0.45.       ANSWER\r\n" );
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