document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=893856>Question 893856</A>: <I><SPAN STYLE=\"word-break: break-all;\"> According to a survey on US population, the probability that a man will live seventy-five years is 0.62 and that he will live up to eighty-five years is 0.023. If Mr. Clooney is seventy-five years old, what is the probability he will survive to eighty-five years?\r<BR>\n" );
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document.write( "Express the probability as a percentage. Include in your final answer the calculations necessary to arrive at the probability </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #541579 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=541579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the probability someone will live to 75 years of age is .62<BR>\n" );
document.write( "the probability someone will live to 85 years of age is .023\r<BR>\n" );
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document.write( "these probabilities are based on the total population.\r<BR>\n" );
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document.write( "clooney made it to 75.\r<BR>\n" );
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document.write( "what is the probability that he will live to be 85 given that he already made it to 75.\r<BR>\n" );
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document.write( "the probability should be .023 / .62 = .0370967742\r<BR>\n" );
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document.write( "why is this?\r<BR>\n" );
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document.write( "assume there are 1000 men who were born at the same time.<BR>\n" );
document.write( ".62 * 1000 = 620 of them will make it to 75.<BR>\n" );
document.write( ".023 * 1000 = 23 of them will make it to 85.\r<BR>\n" );
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document.write( "the proportion of those who will make it to 85 assuming that they already made it to 75 will be 23 / 620 = .0370967742\r<BR>\n" );
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document.write( "multiply that by 100 and you get the percent.\r<BR>\n" );
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document.write( "the percent is therefore equal to 3.70967762% which can be rounded to the number of decimal places you think is appropriate or is required.\r<BR>\n" );
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document.write( "for example, rounding to one decimal place gets you 3.7%.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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