document.write( "Question 1175344: Let A is event a child is infected with ascariasis, and G be event a child infected with giardiasis. Suppose P(A)= .30, P(G)=.25 and P(AnG)=.13.
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Algebra.Com's Answer #800940 by ikleyn(52781) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "It seems to me that to be infected is different event as to be tested positively;\r
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document.write( "Now, if to forget about these details, the probability to be infected at least one one of \"these intestinal parasites\" is\r\n" );
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document.write( "    P(A or B) = 0.3 + 0.25 - 0.13 = 0.42.\r\n" );
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document.write( "The probability do not be infected is the COMPLEMENT to it, i.e.\r\n" );
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document.write( "    1 - 0.42 = 0.58.      ANSWER\r\n" );
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