document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1199932>Question 1199932</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sample preparation for a chemical measurement is completed correctly by 25% of the lab technicians, completed with a minor error by 72% and completed with a major error by 3%. What is the probability that it is completed with either a minior or a major error? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #833919 by </B><A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><B>math_tutor2020(3835)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math_tutor2020><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=833919\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font color=black size=3><BR>\n" );
document.write( "A = person is 100% correct<BR>\n" );
document.write( "B = person made a minor error<BR>\n" );
document.write( "C = person made a major error\r<BR>\n" );
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document.write( "P(A) = 0.25<BR>\n" );
document.write( "P(B) = 0.72<BR>\n" );
document.write( "P(C) = 0.03\r<BR>\n" );
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document.write( "Events A,B,C are mutually exclusive. <BR>\n" );
document.write( "This fact allows us to add the probabilities like so:\r<BR>\n" );
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document.write( "P(B or C) = P(B)+P(C)<BR>\n" );
document.write( "P(B or C) = 0.72+0.03<BR>\n" );
document.write( "P(B or C) = 0.75\r<BR>\n" );
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document.write( "Answer: 0.75<BR>\n" );
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