document.write( "Question 1167002: Consider the following scenario:
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document.write( "• Let P(C) = 0.5
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document.write( "• Let P(D) = 0.6
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document.write( "• Let P(C | D) = 0.7\r
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document.write( "Are C and D mutually exclusive? Why or why not?\r
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Algebra.Com's Answer #791575 by ikleyn(52914) You can put this solution on YOUR website! .\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " Tutor @solver91311 just gave you the correct answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " I also want to add my 2 cents.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "The condition P(C|D) = 0.7 just tells you that the events C and D are not mutually exclusive.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " Otherwise, P(C|D) would be zero, by the definition of mutually exclusive events.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "But, actually, this condition P(C|D) = 0.7 is EXCESSIVE.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Two conditions, P(C) = 0.5 and P(D) = 0.6 are just ENOUGH to conclude that the the events C and D are not mutually exclusive.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Indeed, otherwise it would be \r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " P(C U D) = P(C) + P(D) = 0.5 + 0.6 = 1.1 > 1 (for mutually exclusive events, probabilities are added (!) )\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "which is IMPOSSIBLE.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "So, again, having two conditions P(C) = 0.5 and P(D) = 0.6 is just enough to conclude \r \n" ); document.write( "\n" ); document.write( "that the events C and D ARE NOT mutually exclusive.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |