document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=988039>Question 988039</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that 2.8% of the people in a city are infected with a particular virus. If 80 people from the city are selected at random, what is the probability that at least one of them is infected? Round your answer to three decimal places. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #608701 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=608701\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that 2.8% of the people in a city are infected with a particular virus. If 80 people from the city are selected at random, what is the probability that at least one of them is infected? Round your answer to three decimal places. <BR>\n" );
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document.write( "Binomial Problem with n = 80 and p(infected) = 0.028<BR>\n" );
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document.write( "P(at least one) = 1 - P(none of the 80 are infected)<BR>\n" );
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document.write( "P(at least one) = 1 - (0.972)^80 = 0.8969<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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