document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1050724>Question 1050724</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here is the probability model for the blood type of a randomly chosen person in the United States. \r<BR>\n" );
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document.write( "Blood type	O	A	B	AB<BR>\n" );
document.write( "Probability	0.53	0.21	0.03	0.23\r<BR>\n" );
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document.write( "What is the probability that a randomly chosen American does not have type O blood? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #666334 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=666334\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the probability of having the particular blood type is:<BR>\n" );
document.write( "type o = .53<BR>\n" );
document.write( "type a = .21<BR>\n" );
document.write( "type b = .03<BR>\n" );
document.write( "type ab = .23\r<BR>\n" );
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document.write( "the probability of having type o is .53.\r<BR>\n" );
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document.write( "the probability of not having type o is 1 - .53 = .47\r<BR>\n" );
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document.write( "the sum of all probabilities has to be equal to 1.\r<BR>\n" );
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document.write( ".53 + .21 + .03 + .23 = 1.\r<BR>\n" );
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document.write( "the probabilities are correct.\r<BR>\n" );
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document.write( "the probability of not having type o is also the probability of having any of the other 3 types.\r<BR>\n" );
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document.write( "that would be equal to .21 + .03 + .23 = .47.\r<BR>\n" );
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document.write( "the general formula would be p(not a) is equal to 1 - p(a), where a is the event.\r<BR>\n" );
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document.write( "in this case, the event is having blood type O.\r<BR>\n" );
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